ELASTIC NETWORKS INC
424B4, 2000-10-02
TELEPHONE & TELEGRAPH APPARATUS
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<PAGE>
                                                Filed pursuant to Rule 424(b)(4)
                                                      Registration No. 333-40500

PROSPECTUS

                                7,800,000 Shares

                                     [LOGO]

                                  Common Stock

    This is the initial public offering of common stock by Elastic
Networks Inc. We are selling 6,800,000 shares of our common stock and one of our
stockholders is selling 1,000,000 shares of our common stock. We will not
receive any of the proceeds from the sale of common stock by the selling
stockholder.

                            ------------------------

    Prior to this offering, there has been no public market for our common
stock. Our common stock has been approved for quotation on the Nasdaq National
Market under the symbol ELAS.

                            ------------------------

<TABLE>
<CAPTION>
                                                              Per Share      Total
                                                              ---------   ------------
<S>                                                           <C>         <C>
Initial public offering price...............................   $13.00     $101,400,000
Underwriting discounts and commissions......................   $  .91     $  7,098,000
Proceeds to Elastic Networks, before offering expenses......   $12.09     $ 82,212,000
Proceeds to the selling stockholder.........................   $12.09     $ 12,090,000
</TABLE>

    Elastic Networks and the selling stockholder have granted the underwriters
an option for a period of 30 days to purchase up to 1,170,000 additional shares
of common stock at the offering price, less the underwriting discount.

                            ------------------------

         Investing in our common stock involves a high degree of risk.
                    See "Risk Factors" beginning on page 7.

                             ---------------------

    Neither the Securities and Exchange Commission nor any state securities
commission has approved or disapproved of these securities or determined if this
prospectus is truthful or complete. Any representation to the contrary is a
criminal offense.

CHASE H&Q                                                     ROBERTSON STEPHENS

                                UBS WARBURG LLC

September 28, 2000
<PAGE>
Elastic Networks logo, top center, superimposed over the words "Elastic
Networks" repeating from the left side of the page to the right side of the
page. The Elastic Networks logo appears at the top center of the page
superimposed over the words "Elastic Networks" repeating from left to right.
Below the logo, the phrase "Elastic Networks provides next-generation DSL
technology and products" appears. Below the phrase described above, four product
photographs appear in vertical arrangement, each with a description of the
product to the immediate right of each photograph. The product photographs and
descriptions are presented as follows:

[photograph], with a horizontal line leading to the words "BitStorm and ELMo DSL
access equipment."

[photograph], with a horizontal line leading to the words "MicroBurst DSL remote
access equipment."

[photograph], with a horizontal line leading to the words "BitStorm and YesWare
software servers."

[photograph], with a horizontal line leading to the words "StormPort and Elite
DSL modems."
<PAGE>
                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                PAGE
                                                              --------
<S>                                                           <C>
Prospectus Summary..........................................       3

Risk Factors................................................       7

Cautionary Note Regarding Forward-Looking Statements........      15

Use of Proceeds.............................................      15

Dividend Policy.............................................      15

Capitalization..............................................      16

Dilution....................................................      17

Selected Historical Financial Information...................      18

Management's Discussion and Analysis of Financial Condition
  and Results of Operations.................................      19

Business....................................................      28

Management..................................................      40

Related Party Transactions..................................      48

Principal and Selling Stockholders..........................      52

Description of Capital Stock................................      54

Shares Eligible for Future Sale.............................      56

Underwriting................................................      57

Legal Matters...............................................      61

Experts.....................................................      61

Additional Information......................................      61

Index to Financial Statements...............................     F-1
</TABLE>
<PAGE>
                               PROSPECTUS SUMMARY

    YOU SHOULD READ THE FOLLOWING SUMMARY TOGETHER WITH THE MORE DETAILED
INFORMATION ABOUT ELASTIC NETWORKS AND THE COMMON STOCK BEING SOLD IN THIS
OFFERING, AS WELL AS OUR FINANCIAL STATEMENTS AND THE RELATED NOTES, APPEARING
ELSEWHERE IN THIS PROSPECTUS. BECAUSE THIS IS ONLY A SUMMARY, YOU SHOULD READ
THE ENTIRE PROSPECTUS, ESPECIALLY THE RISKS DESCRIBED UNDER "RISK FACTORS,"
BEFORE YOU DECIDE TO INVEST IN OUR COMMON STOCK.

                             ELASTIC NETWORKS INC.

    We design, develop and market high-speed digital subscriber line, or DSL,
communications products. Our products enable service providers to deliver easy
to deploy and cost-effective broadband access solutions over the existing copper
telephone wire infrastructure. We design our products based on our patented
EtherLoop technology that combines the best attributes of DSL with those of
Ethernet technology to deliver a next generation access solution. EtherLoop's
advantages overcome many of the deployment, performance, cost and quality of
service limitations of conventional DSL technologies.

    Our products consist of Internet protocol DSL access multiplexers that
connect DSL signals with the Internet and other networks, DSL modems and
complementary software. We sell our products directly to domestic and
international service providers for deployment in various environments, such as
central offices to reach business and residential users or on any premises where
multiple end users are located, including hotels, multi-tenant business
complexes, apartment buildings, condominiums and university campuses. In
addition to our direct selling efforts, we have distribution arrangements with
companies such as Nortel Networks Inc. and Westcon Group Inc. that allow us to
expand our market presence. In the first six months of 2000, sales to Nortel
Networks accounted for approximately 21% of our total revenues and sales to
Westcon accounted for approximately 14% of our total revenues.

    We were originally formed in January 1997 as the Elastic Networks group of
Nortel Networks Inc. and began doing business as a separate company in
May 1999. For the year ended December 31, 1999, we incurred a net loss of
approximately $20.7 million and used cash in operations of $16.4 million. Upon
completion of this offering, Nortel Networks Limited and Nortel Networks Inc.
together will own approximately 46% of our outstanding common stock.

                               MARKET OPPORTUNITY

    The demand for broadband access is growing rapidly as the number of Internet
users continues to increase, and these users rely on the Internet for more
advanced applications such as e-commerce, telecommuting, distance learning and
online entertainment. As these applications require more bandwidth, the ability
to connect to the Internet at high speeds is becoming increasingly important.
DSL technology is designed to address this need by delivering broadband access
to end users over existing copper telephone wires, an infrastructure that
connects to over 850 million homes and businesses worldwide. However, to date
the deployment and maintenance of conventional DSL technologies have been
complex, costly and subject to quality of service issues. We believe that
widespread deployment of DSL services requires technology that overcomes these
challenges.

                           OUR SOLUTION AND STRATEGY

    Our access solution enables service providers to simplify DSL deployment and
provide a cost-effective means of delivering high-speed access to more of their
subscriber base. Our EtherLoop-based products offer the following benefits:

    - MAXIMIZE AVAILABLE BANDWIDTH. Our EtherLoop technology maximizes available
      bandwidth by enabling both upstream and downstream access speeds of up to
      4 megabits per second, or Mbps, based on end user demands. This technology
      advantage over fixed bandwidth solutions provides the

                                       3
<PAGE>
      functionality to deliver an array of value-added business services and
      applications on a common platform.

    - AVOID INTERFERENCE. Our EtherLoop technology constantly monitors for
      potential signal interference on each line over which EtherLoop signals
      are transmitted and can automatically adjust transmission frequencies to
      avoid potential signal degradation. This enables service providers to
      deploy more broadband lines in the same bundled group of telephone lines,
      and improves quality of service.

    - EASY TO DEPLOY AND USE. Our access products are easy to deploy and do not
      require re-engineering or rewiring of the local telephone network or time
      consuming service calls. Our DSL modems are also designed for easy
      installation, providing the end user with simple plug and play
      connectivity.

    - HIGHLY SCALABLE. Our products are designed for quick adjustment of
      features such as line capacity and bandwidth, without the cost of
      replacing the product.

    - GREATER TRANSMISSION DISTANCE. Our technology also provides reliable
      service coverage beyond the typical range of conventional DSL
      technologies. With this extended reach, service providers are able to
      maximize their technology investment to deliver high-speed access to more
      of their subscriber base. Additionally, unlike conventional DSL
      technologies, EtherLoop transmits signals in small packets that are
      capable of being repeated to extend service over even greater distances.

    Key elements of our strategy include:

    - Continuing to capitalize on the advantages of our EtherLoop technology;

    - Expanding our penetration within the broadband access market;

    - Increasing our direct and indirect sales channels, and expanding
      internationally;

    - Leveraging our business relationships to improve our products, reduce our
      costs and increase our speed to market; and

    - Facilitating further market adoption by licensing our technology.

                             CORPORATE INFORMATION

    We were incorporated as a Delaware corporation in September 1998 and began
doing business as a separate company in May 1999. Our principal executive office
is located at 6120 Windward Parkway, Suite 100, Alpharetta, Georgia 30005. Our
telephone number is (678) 297-3100 and our Web address is WWW.ELASTIC.COM.
Information contained on our Web site does not constitute part of this
prospectus, and you should rely only on the information contained in this
prospectus in deciding whether to invest in our common stock.

    This prospectus refers to market research reports prepared by various
organizations, which typically do not disclose their underlying limitations or
assumptions. You should not rely on these market reports as being necessarily
indicative of future developments.

                                       4
<PAGE>
                                  THE OFFERING

<TABLE>
<S>                                                          <C>
Common stock offered by Elastic Networks...................  6,800,000 shares

Common stock offered by the selling stockholder............  1,000,000 shares

Common stock to be outstanding after this offering.........  31,292,821 shares

Use of proceeds by Elastic Networks........................  To repay short term debt, to fund the
                                                             expansion of our business, our operating
                                                             deficits and other working capital needs,
                                                             as well as general corporate purposes.

Nasdaq National Market symbol..............................  ELAS
</TABLE>

    The number of shares of common stock to be outstanding after this offering
is based on shares outstanding as of August 31, 2000, and excludes:

    - 5,512,162 shares of common stock issuable upon exercise of outstanding
      options;

    - 1,126,311 shares reserved for future grants under our 1999 stock incentive
      plan; and

    - 114,899 shares of common stock issuable upon exercise of outstanding
      warrants.
                            ------------------------

    EXCEPT AS OTHERWISE INDICATED, ALL INFORMATION IN THIS PROSPECTUS:

    - REFLECTS THE CONVERSION OF ALL THE OUTSTANDING SHARES OF OUR SERIES A AND
      B PREFERRED STOCK INTO 9,084,913 SHARES OF OUR COMMON STOCK, WHICH WILL
      AUTOMATICALLY OCCUR ON THE CLOSING OF THIS OFFERING;

    - REFLECTS THE AMENDMENT AND RESTATEMENT OF OUR CERTIFICATE OF INCORPORATION
      AND BYLAWS, WHICH WILL OCCUR IMMEDIATELY BEFORE THE CLOSING OF THIS
      OFFERING; AND

    - ASSUMES NO EXERCISE OF THE UNDERWRITERS' OVER-ALLOTMENT OPTION.

                                       5
<PAGE>
                             SUMMARY FINANCIAL DATA
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)

    The following table is a summary of the financial data for our business. You
should read this information together with the financial statements and the
related notes appearing at the end of this prospectus and the information under
"Management's Discussion and Analysis of Financial Condition and Results of
Operations." For an explanation of the determination of the number of shares
used to compute historical and pro forma basic and diluted net loss per share,
see note 2 of the notes to our financial statements. The pro forma balance sheet
data summarized below gives effect to the conversion of all outstanding shares
of our preferred stock into 9,084,913 shares of our common stock, which will
automatically occur on the closing of this offering. The pro forma as adjusted
balance sheet data summarized below also reflects the sale of the common stock
offered by us at the initial public offering price of $13.00 per share after
deducting underwriting discounts and estimated offering expenses payable by us,
and our receipt and application of the net proceeds from this offering,
including the repayment of an aggregate of $6.0 million in short term debt
borrowed under two secured promissory notes issued in August 2000 for up to
$5.0 million each.

<TABLE>
<CAPTION>
                                                                                  SIX MONTHS ENDED
                                                   YEAR ENDED DECEMBER 31,            JUNE 30,
                                                ------------------------------   -------------------
                                                  1997       1998       1999       1999       2000
                                                --------   --------   --------   --------   --------
                                                                                     (UNAUDITED)
<S>                                             <C>        <C>        <C>        <C>        <C>
STATEMENT OF OPERATIONS DATA:
Total revenues................................  $    --    $    233   $  8,215   $  2,600   $ 14,693
Gross profit (loss)...........................       --      (1,913)    (6,075)    (2,909)       562
Operating expenses............................    4,503      13,317     14,830      5,887     13,874
Operating loss................................   (4,503)    (15,230)   (20,905)    (8,796)   (13,312)
Net loss......................................  $(4,503)   $(15,230)  $(20,731)  $ (8,760)  $(13,259)
                                                =======    ========   ========   ========   ========
Net loss attributable to common
  stockholders................................  $(4,503)   $(15,230)  $(21,064)  $ (8,827)  $(13,525)
                                                =======    ========   ========   ========   ========
Basic and diluted net loss per common share...  $ (0.27)   $  (0.91)  $  (1.26)  $  (0.53)  $  (0.81)
                                                =======    ========   ========   ========   ========
Weighted average shares used in computing
  basic and diluted net loss per common
  share.......................................   16,670      16,670     16,671     16,670     16,675
                                                =======    ========   ========   ========   ========
Pro forma basic and diluted net loss per
  common share (unaudited)....................                        $  (1.03)             $  (0.58)
                                                                      ========              ========
Weighted average shares used in computing
  unaudited pro forma basic and diluted net
  loss per common share amounts (unaudited)...                          20,548                23,504
                                                                      ========              ========
</TABLE>

<TABLE>
<CAPTION>
                                                                        JUNE 30, 2000
                                                              ----------------------------------
                                                                                      PRO FORMA
                                                               ACTUAL    PRO FORMA   AS ADJUSTED
                                                              --------   ---------   -----------
                                                                         (UNAUDITED)
<S>                                                           <C>        <C>         <C>
BALANCE SHEET DATA:
Cash, cash equivalents and short-term investments...........  $  4,518    $ 4,518      $79,405
Working capital.............................................     7,189      7,189       82,076
Total assets................................................    20,198     20,198       95,085
Capital lease obligations long term.........................       304        304          304
Redeemable convertible participating preferred stock........    30,861         --           --
Total stockholders' equity (deficit)........................   (21,953)     8,908       89,795
</TABLE>

                                       6
<PAGE>
                                  RISK FACTORS

    YOU SHOULD CAREFULLY CONSIDER THE RISKS DESCRIBED BELOW AND ALL OF THE OTHER
INFORMATION IN THIS PROSPECTUS BEFORE MAKING A DECISION TO INVEST IN OUR COMMON
STOCK.

                         RISKS RELATED TO OUR BUSINESS

WE HAVE A SHORT OPERATING HISTORY, WHICH MAY MAKE IT DIFFICULT TO ACCURATELY
FORECAST OUR FUTURE REVENUES AND OTHER OPERATING RESULTS.

    We only began selling our products in mid 1999. As a result, we have only a
limited operating history upon which you may evaluate our business and
prospects. Our limited operating history may make it difficult or impossible for
analysts or investors to accurately forecast our future revenues and other
operating results. Furthermore, if we do not meet or exceed the forecasts and
expectations of analysts and investors regarding our future revenues and other
operating results, the price of our common stock could decline substantially.

WE HAVE INCURRED NET LOSSES SINCE WE WERE FORMED AND EXPECT TO INCUR FUTURE
LOSSES.

    From inception through June 30, 2000, we incurred net losses totaling
approximately $53.7 million. As of June 30, 2000, we had an accumulated deficit
of $25.6 million. We expect to continue to make substantial expenditures for
sales and marketing, product development and other purposes, which may be fixed
in the short term. As a result, we expect to continue to incur losses in 2000,
as well as in future years. Our ability to increase revenues, and achieve and
maintain profitability in the future, will primarily depend on our ability to
increase sales of our products, reduce production and other costs and
successfully introduce new and enhanced versions of our existing products into
the marketplace. We cannot assure you that we will be able to increase our
revenues at a rate that equals or exceeds expenditures. Our failure to do so
will result in our incurring additional losses.

WE EXPECT OUR OPERATING RESULTS TO FLUCTUATE, WHICH MAY CAUSE OUR STOCK PRICE TO
DECLINE.

    Our quarterly and annual operating results are likely to fluctuate
significantly in the future due to a variety of factors, many of which are
outside of our control. Therefore, you should not rely on our historical
operating results as an indicator of future performance. Our results of
operations could fluctuate due to the following material factors:

    - variations in market acceptance of our products and in the timing and size
      of customer orders and shipments;

    - changes in the mix of our product offerings and sales channels;

    - competitive market conditions, such as pricing policies, timing and
      acceptance of new and enhanced product introductions by us, our customers
      or our competitors, including introductions of alternative technologies;

    - changes in our operating expenses, including the costs of our products'
      components;

    - our ability to meet and maintain production volumes and ship products in a
      timely manner; and

    - other general economic factors, as well as those specific to the
      telecommunications industry.

WE DEPEND ON A SMALL NUMBER OF CUSTOMERS AND THE LOSS OF, OR REDUCTION IN
PURCHASES FROM, ANY ONE OF THEM COULD SIGNIFICANTLY HARM OUR BUSINESS.

    We derive a substantial portion of our revenues, and expect to continue to
derive a substantial portion of our revenues in the near future, from sales to a
limited number of customers. Unless and until we diversify and expand our
customer base, our success will depend significantly upon the timing and size of
future purchase orders, if any, from our largest customers, as well as their
product requirements, financial

                                       7
<PAGE>
and operational success, and, in particular, the successful deployment of
services using our products. The loss of any one or more of these customers,
significant changes in their product requirements, delays of significant orders
or the occurrence of any sales fluctuations of our or our customers' products
could reduce our revenues.

A MAJORITY OF OUR BUSINESS IS GENERATED BY DEMAND FROM NEW AND EMERGING SERVICE
PROVIDERS, AND THEIR INABILITY TO OBTAIN CAPITAL OR FINANCING COULD CAUSE THEM
TO REDUCE OR DISCONTINUE THE PURCHASE OF OUR PRODUCTS AT ANY TIME.

    The companies that currently deploy our products, or that may do so in the
future, are new and emerging and have largely unproven business models. These
companies require substantial capital for the development, construction and
expansion of their businesses. Nortel Networks has provided significant
equipment financing arrangements for the purchase of our products by two of our
customers, Darwin Networks, Inc. and CAIS Internet, Inc. For the first six
months of 2000, we estimate that Nortel Networks provided financing guarantees
for Darwin for $3.6 million of purchases, which represented 24.5% of our
revenues for this period, and direct financing to CAIS for $1.0 million of
purchases of our products, which represented 6.8% of our revenues for this
period. Nortel Networks has offered to provide approximately $5.0 million in
additional financing to CAIS and approximately $4.2 million in financing
guarantees for Darwin for purchases through September 28, 2000. These financing
arrangements will not be available from Nortel Networks for purchases of our
products after the completion of this offering. In addition, other financing may
not be available to these companies or our other customers on favorable terms,
if at all. To the extent that these companies are unable to obtain the financing
they need, our ability to make future sales to these customers directly or
through our distributors could be harmed. In addition, to the extent we choose
to provide financing to these customers, we will be subject to additional
financial risk which could reduce our profitability.

WE ONLY OFFER A LIMITED NUMBER OF PRODUCTS AND THE FAILURE OF ANY ONE OF THEM TO
ACHIEVE WIDESPREAD MARKET ACCEPTANCE WOULD SIGNIFICANTLY HARM OUR RESULTS OF
OPERATIONS.

    We derive substantially all of our revenues from sales of a limited number
of high-speed access products. The failure of any of our product offerings to
achieve and maintain a meaningful level of market penetration and customer
satisfaction would harm our revenues.

    In addition, we only began selling our products in mid 1999, and cannot yet
predict whether they will gain widespread market acceptance. Even if our
customers do purchase our products in meaningful quantities, due to the variety
and complexity of the environments in which these customers operate, our
products may not operate as expected. This could result in cancelled orders,
delays in installation and increased expenses. In addition, the success of
competing products and technologies, pricing pressures or manufacturing
difficulties could further reduce our profitability and the price of our common
stock.

THE FAILURE OF DSL TECHNOLOGY TO ACHIEVE WIDESPREAD MARKET PENETRATION WOULD
NEGATIVELY IMPACT DEMAND FOR OUR PRODUCTS.

    Because our products are based on the use of copper telephone wires, and
because there are physical limits to the speed and distance over which data can
be transmitted over these types of wires, our products may not be a viable
solution for some potential customers. Some of our competitors currently offer
products based on directly competing technologies that do not have these
limitations. Additionally, in the future our competitors may develop
transmission media and technologies other than DSL that provide faster access,
higher reliability or are more cost effective for some of our existing and
potential customers. If any of these technologies are adopted or implemented in
our market, sales of our products could decline and our market share and
profitability could be reduced.

                                       8
<PAGE>
WE DEPEND ON DISTRIBUTORS AND RESELLERS FOR SALES, AND IF ANY OF THEM DO NOT
PERFORM AS EXPECTED, WE COULD EXPERIENCE LOWER THAN EXPECTED SALES.

    Our success depends, in part, upon distribution and reseller arrangements,
including our current arrangements with Nortel Networks and Westcon. These
arrangements are relatively new, and we cannot accurately predict whether
significant recurring revenues will be generated from these arrangements. Our
sales and distribution partners may not market, sell or distribute our products,
or perform any of their other obligations, as we expect, in which case we may
not desire to maintain these arrangements, or be able to develop successful
replacements. In the event that any of these arrangements are terminated or are
otherwise unsuccessful, sales of our products could be harmed.

OUR DEPENDENCE ON SINGLE SOURCE SUPPLIERS EXPOSES US TO SUPPLY INTERRUPTION
RISKS WHICH COULD HARM OUR SALES OR INCREASE OUR COSTS.

    Although we generally use standard parts and components for our products,
our products contain several key components that are purchased from single
source suppliers: line driver chips from Texas Instruments Incorporated, power
supplies from Astec America Inc. and system processor chips from Motorola, Inc.
We do not have written agreements with our single source suppliers. Our reliance
on the suppliers of these components exposes us to potential production
difficulties and quality variations due to increased third-party demand or
supplier related issues. If these suppliers are unable to meet component
requirements, we will be forced to seek alternative production sources, which
could negatively impact our costs and the timely delivery of our products.
Alternate suppliers may not meet our quantity requirements or quality standards.
Our inability to obtain sufficient quantities of these components, or components
that meet our quality standards, may result in delays or reductions in product
shipments, which could harm our reputation and reduce our profitability.

OUR DEPENDENCE ON A SINGLE CONTRACT MANUFACTURER COULD RESULT IN PRODUCT
DELIVERY DELAYS.

    We currently use a single contract manufacturer, Sanmina Corporation, to
build some of our printed circuit boards, chassis and subassemblies and, in most
cases, to complete final assembly and testing of our products. Our current
reliance on a single manufacturer could result in the absence of adequate
capacity to meet our customers' needs. In addition, we could experience
unavailability of, or interruptions in, access to certain process technologies,
as well as reduced control over delivery schedules, manufacturing yields,
quality and costs. It is also possible that Sanmina's manufacturing capabilities
may not be available to us when needed, or that it may not be in a position to
satisfy our production requirements at acceptable prices and on a timely basis,
if at all. If Sanmina is unable or unwilling to continue manufacturing our
components in required volumes, or to our quality specifications, or if we
develop new technologies requiring components which Sanmina is incapable of
manufacturing, we will have to identify acceptable alternative manufacturers.
Alternative manufacturers, however, may not be available. Any significant
interruption in the supply of products could result in our inability to
adequately meet our customers' demands, which in turn could harm our sales.

BECAUSE A SIGNIFICANT AND INCREASING PERCENTAGE OF OUR REVENUES COMES FROM SALES
OUTSIDE THE UNITED STATES, WE ARE SUBJECT TO A NUMBER OF RISKS SPECIFIC TO THE
INTERNATIONAL MARKETS IN WHICH WE OPERATE.

    Revenues from customers outside of the United States accounted for about 12%
of our total revenues for the year ended December 31, 1999, and 15% of our total
revenues for the six months ended June 30, 2000. As a part of our strategy, we
intend to expand our sales in international markets. Sales to international
markets have the following material risks:

    - longer receivables collection periods;

    - potential increase in political and economic instability;

    - difficulties and costs of staffing and managing foreign operations;

                                       9
<PAGE>
    - difficulties in enforcing our rights and agreements through non-U.S. legal
      systems;

    - unexpected changes in regulatory requirements;

    - changes in import or export licensing requirements;

    - reduced protection for intellectual property rights in some countries; and

    - currency fluctuations which could cause our products, the prices of which
      are denominated in U.S. dollars, to become relatively more expensive for
      non-U.S. customers and reduce demand for our products.

    We also utilize product development and other resources in order to meet
regulatory and technical requirements of countries into which we sell our
products. We depend on sales of our products in these markets to offset the
costs associated with developing products for these markets. If we are unable to
generate sufficient sales to offset these expenses, our profitability will
suffer.

    We can give no assurance that non-U.S. markets for our products will
continue to develop or develop at the rate we expect. Any failure of these
markets to develop, or our failure to increase sales to customers outside of the
United States, could harm our results of operations and the price of our common
stock.

THE ABILITY OF NORTEL NETWORKS TO EXERCISE SIGNIFICANT INFLUENCE OVER OUR
AFFAIRS COULD AFFECT OUR ABILITY TO IMPLEMENT SUCCESSFUL STRATEGIC AND
OPERATIONAL INITIATIVES.

    We were formed by means of a contribution agreement among Nortel Networks
Corporation, its subsidiary Nortel Networks Inc., and us. Under this agreement,
we issued Nortel Networks Inc. 15,384,614 shares of our common stock. Prior to
this offering, Nortel Networks Inc. transferred 8,948,770 shares of our common
stock, and a warrant for 51,230 shares of our capital stock, to its parent,
Nortel Networks Limited. Messrs. Manley and Reid, appointed by Nortel Networks
to our board of directors, are executives of Nortel Networks. Although Nortel
Networks Limited is selling 1,000,000 shares of our common stock in this
offering, after the offering closes, the Nortel Networks entities will still own
approximately 46%, or 14,435,845 shares, of our common stock, including the
51,230 shares of our common stock that are issuable upon exercise of the warrant
transferred to Nortel Networks Limited. Because of this level of ownership, and
because of their board representation, after the offering the Nortel Networks
entities will continue to have the ability to exercise significant control over
our affairs. There also may be conflicts of interest between us and Nortel
Networks with respect to acquisitions, financings and other corporate
opportunities. Nortel Networks' ability to exercise significant control could
have the effect of delaying or preventing a change in control of Elastic
Networks and other strategic and operational initiatives, which could harm our
business and the price of our common stock.

AN INTERRUPTION OR DISSOLUTION OF ANY ONE OF OUR RELATIONSHIPS WITH NORTEL
NETWORKS COULD SIGNIFICANTLY HARM OUR BUSINESS AND FINANCIAL CONDITION.

    We have entered into various agreements and relationships with Nortel
Networks, including a distribution arrangement under which they have agreed to
market and distribute our products. We cannot predict whether Nortel Networks
will continue to market and distribute our products or perform its other
obligations under this or our other agreements.

    Additionally, since we became a separate company, Nortel Networks has
provided us with insurance, access to software systems and other services under
a transition services agreement that terminates on November 12, 2000. Our
insurance benefits under this agreement automatically terminate on the closing
of this offering. We may not be able to obtain similar insurance at favorable
rates or access to similar software systems on commercially reasonable terms.

                                       10
<PAGE>
IF WE FAIL TO PROTECT OUR INTELLECTUAL PROPERTY, OR IF OTHERS USE OUR
INTELLECTUAL PROPERTY WITHOUT OUR PERMISSION, OUR COMPETITIVE POSITION MAY
SUFFER.

    Our ability to compete and be successful is based, in part, on our
intellectual property. We rely on a combination of copyright, trademark, patent
and trade secret laws and contractual restrictions to establish and protect our
technology and other intellectual property. We require employees and consultants
and, when possible, suppliers, manufacturers and distributors, to sign
confidentiality agreements. However, we cannot assure you that our steps will be
sufficient to prevent misappropriation of our technology and other intellectual
property, or that our competitors will not independently develop technologies or
other intellectual property that are substantially equivalent or superior to
ours. In addition, the laws of many countries do not protect intellectual
property to the same extent as the laws of the United States. If our
intellectual property rights are not protected, our business may suffer. For
instance, an opposition to our registration of the trademark "YesWare" was filed
on June 12, 2000. We are currently assessing this opposition to determine the
effect, if any, that this opposition may have if it is successful. If the
opposition succeeds, we will not be able to register this trademark and may be
required to rename our YesWare product or license the trademark from the
opposing party. If we have to bring a lawsuit against another entity that
infringes or misappropriates any of our intellectual property, we would likely
have to divert significant resources, both financial and human, in prosecuting
the lawsuit.

    We own U.S. patent number 5,912,895, titled "Information Network Access
Apparatus and Methods for Communicating Information Packets via Telephone
Lines." This patent issued on June 15, 1999 and expires on May 1, 2016. We also
have exclusive and non-exclusive licenses from Nortel Networks to other
technologies that we use in our business. However, our rights to our patent and
to all of these licensed technologies are subject to various licenses that
Nortel Networks, as the original owner, granted to other companies prior to
May 12, 1999. Therefore, we cannot assure you that our rights to these
technologies will allow us to prevent these companies and their licensees from
using these technologies. In addition, we have granted back to Nortel Networks
licenses to these technologies and to all improvements that we may acquire or
make to these technologies. We have also granted Nortel Networks a license to
any patents that we own, acquire, or result from our filing applications or from
obtaining a license, during any period that Nortel Networks owns more than 50%
of our voting securities. Although these licenses are subject to Nortel
Networks' obligation not to compete with us with respect to EtherLoop-based
products through May 12, 2002, there will be no contractual restrictions on
Nortel Networks' ability to engage in competitive activities with respect to
EtherLoop-based products after that date.

    Also, from time to time, we may desire or be required to obtain or renew
licenses from other parties in order to further develop and market commercially
viable products and for other business purposes. There can be no assurance that
the necessary licenses will be available upon acceptable terms, if at all. Our
failure to obtain these licenses, or to protect and prevent the misappropriation
of our intellectual property, could significantly harm our competitive position.

DUE TO THE INTEGRATION OF OUR INTELLECTUAL PROPERTY WITH THIRD-PARTY
TECHNOLOGIES IN OUR PRODUCT OFFERINGS, WE MAY BE SUBJECT TO INTELLECTUAL
PROPERTY INFRINGEMENT CLAIMS THAT WOULD BE COSTLY TO DEFEND AND COULD HARM OUR
BUSINESS AND ABILITY TO COMPETE.

    Because our products integrate our intellectual property and third party
technologies, we may be subject to the risk of adverse claims and litigation
alleging that our products, technologies and other intellectual property, as
well as those of our licensors, infringe the intellectual property rights of
others. Any of these claims could require us to pay damages or settlement
amounts and could require us to develop non-infringing intellectual property or
acquire licenses to the intellectual property that is the subject of asserted
infringement claims. This could result in product delays or increased costs,
either of which could harm our ability to compete and our profitability. In
addition, the cost of defending any litigation and resulting distraction of our
management resources could harm our ability to generate and implement successful
business strategies.

                                       11
<PAGE>
WE BELIEVE THAT SIGNIFICANT EXPANSION OF OUR BUSINESS WILL BE REQUIRED FOR OUR
COMPANY TO SUCCEED, AND IF WE FAIL TO MANAGE THIS EXPANSION EFFECTIVELY, OUR
BUSINESS AND STOCK PRICE WILL SUFFER.

    We have rapidly and significantly expanded our operations since 1998. We
believe that further significant expansion will be required to address potential
growth in our client base and market opportunities in order for us to be
successful. During 1999, we increased the number of employees from 58 to 95, and
as of August 31, 2000, we had further increased that number to 166. To manage
the expected growth of our operations and personnel, we will be required to:

    - improve existing and implement new operational, financial and management
      controls, reporting systems and procedures;

    - install new management information systems;

    - successfully integrate any companies, technologies or products that we may
      acquire; and

    - train, motivate and manage our sales and marketing, engineering, technical
      and customer support employees.

    If we are not able to manage our growth and its related costs effectively,
it will be difficult to support our future operations.

WE MAY NEED TO RAISE ADDITIONAL CAPITAL IN THE FUTURE, WHICH COULD ADVERSELY
AFFECT OUR STOCKHOLDERS; IF WE ARE UNABLE TO SECURE ADEQUATE FUNDS ON TERMS
ACCEPTABLE TO US, WE MAY BE UNABLE TO EXECUTE OUR BUSINESS PLAN.

    If the net proceeds of this offering, our existing cash balances and cash
flows from operations are not sufficient to meet our liquidity needs, we will
need to raise additional funds. If additional funds are raised through the
issuance of equity securities, the percentage ownership of pre-existing
stockholders will be reduced. If additional funds are raised through the
issuance of debt or preferred equity securities, these securities would have
rights, preferences and privileges senior to those of the common stock.
Furthermore, the terms of any debt could impose restrictions on our operations.
If adequate funds are not available on acceptable terms, or are not available at
all, we may not be able to take advantage of market opportunities, develop new
products or otherwise respond to competitive pressures.

DUE TO A HIGH LEVEL OF STOCK OWNERSHIP, MANAGEMENT AND SOME OF OUR STOCKHOLDERS
CAN EXERCISE SIGNIFICANT INFLUENCE OVER OUR BUSINESS AFFAIRS, WHICH COULD
NEGATIVELY IMPACT OUR OTHER STOCKHOLDERS' POTENTIAL RETURN ON INVESTMENT.

    Upon the completion of this offering, our executive officers, directors and
5% or greater stockholders, and their affiliates, will beneficially own an
aggregate of approximately 62.9% of our outstanding common stock. These
stockholders, if acting together, will be able to significantly influence all
matters requiring approval by our stockholders, including the election of
directors and the approval of mergers or other business combinations. This
concentration of ownership may have the effect of delaying, deterring or
preventing a change in control of Elastic Networks, which could prevent our
stockholders from receiving a premium for their common stock as part of any
merger or other business combination.

OUR CERTIFICATE OF INCORPORATION, OUR BYLAWS AND DELAWARE LAW CONTAIN PROVISIONS
THAT COULD DELAY OR PREVENT A CHANGE IN CONTROL.

    Immediately prior to the closing of this offering, our certificate of
incorporation and bylaws will be amended to provide for a classified board of
directors and to restrict our stockholders from acting without a meeting. These
provisions may make some corporate actions more difficult and might delay or
prevent a change in control. Further, our board of directors will have the
ability to issue up to 25 million shares of preferred stock with certain rights,
preferences, privileges and restrictions, including voting rights, that could be
senior to those of our common stock. New preferred stock might also be used to
make acquiring

                                       12
<PAGE>
control of us more difficult. We have no current plans to issue shares of
preferred stock. We will also indemnify officers and directors against losses
incurred in legal proceedings to the broadest extent permitted by Delaware law.

                          RISKS RELATED TO OUR MARKET

OUR MARKET IS SUBJECT TO RAPID CHANGES IN INDUSTRY STANDARDS AND TECHNOLOGY, AND
IF WE FAIL TO CONTINUALLY MAKE NEW PRODUCT INTRODUCTIONS AND ENHANCEMENTS, OUR
ABILITY TO EFFECTIVELY COMPETE WILL SUFFER.

    The market for high-speed access products is characterized by rapid
technological developments, frequent enhancements to existing products, new
product introductions, changes in end user requirements and evolving industry
standards. Any technological advancements, whether in DSL or otherwise, or
product introductions that provide faster access, greater reliability, increased
cost-effectiveness or other advantages over our technology, could render our
product line obsolete. We cannot assure you that we will be able to respond
quickly and effectively to any of these changes or challenges. Moreover, in
order to respond quickly and effectively to all of these changes and challenges,
we must continually make investments in the development of new technologies and
the further advancement of our current technologies. However, the nature and
quantity of these investments cannot be definitively predicted, and we may not
have sufficient resources to make these investments.

    Even if we are able to make the necessary investments, the development of
new or enhanced products or technologies is a complex and uncertain process
requiring the accurate anticipation of technological and market trends. We may
experience design, manufacturing, marketing and other difficulties that could
delay or prevent our development, introduction or marketing of new or enhanced
products or technologies. The introduction of new or enhanced products or
technologies also requires that we manage the transition from older products or
technologies in order to minimize disruption in customer ordering patterns and
ensure that adequate supplies of new products can be delivered to meet
anticipated customer demand. We may not be able to successfully develop or
introduce, or manage the transition to, these new products. Furthermore, despite
testing by us and our contract manufacturer, any of these new or enhanced
products or technologies may contain undetected or unresolved errors when they
are first introduced or as new versions are released.

    To the extent that we are unable to effectively address these technological
changes and challenges, our business, financial condition, results of operations
and the price of our common stock could be harmed.

OUR MARKET IS HIGHLY COMPETITIVE AND OUR PRODUCTS, TECHNOLOGY AND BUSINESS MAY
NOT BE ABLE TO COMPETE EFFECTIVELY WITH OTHER PRODUCTS OR TECHNOLOGIES.

    The market for high-speed access products is highly competitive, and we
expect that it will become increasingly competitive in the future. In addition
to facing competition from providers of DSL based products, our products
currently compete with products using other technologies. Our most direct
competitors include Alcatel USA, Inc., Cisco Systems, Inc., Copper Mountain
Networks, Inc., Lucent Technologies Inc., Nokia Corporation, Nortel Networks and
Tut Systems, Inc. In addition, due to the rapidly evolving nature of the market
in which we compete, additional competitors, including other large
telecommunications equipment manufacturers, as well as smaller companies, may
enter our markets and further intensify competition. These and our other
competitors may foresee the course of market developments more accurately than
we do.

    In addition, many of our current and potential competitors have
significantly greater sales and marketing, technical, manufacturing, financial
and other resources than we do, such as AT&T and Time Warner in the cable
broadband market. The products and technologies offered by these competitors may
provide faster access and higher reliability than ours, and prove more
cost-effective for some end users. Commercial acceptance of any one of these
competing solutions could decrease the demand for our

                                       13
<PAGE>
products, result in our loss of market share and reduce average selling prices
and the profit margins associated with our products.

OUR COMPANY, OUR PRODUCTS AND OUR CUSTOMERS ARE SUBJECT TO GOVERNMENT
REGULATIONS, AND CHANGES IN CURRENT OR FUTURE LAWS OR REGULATIONS THAT COULD
NEGATIVELY IMPACT US, OUR PRODUCTS OR OUR CUSTOMERS COULD HARM OUR BUSINESS.

    The FCC regulates the telecommunications industry, including our company,
our products and our customers. The adoption of new FCC regulations affecting
the broadband access industry, our customers or our products may harm our
business. For example, FCC policies that affect the availability of data and
Internet services may impede our customers' penetration into certain markets or
affect the prices they charge. In turn, this may reduce their orders for our
products. In addition, international regulatory bodies are beginning to adopt
regulations and standards for the communications industry. These regulations and
standards may require us to make engineering or functional changes to our
products, or changes to our marketing and selling practices. Delays caused by
changes in our products or practices undertaken to comply with state, national
and international regulatory requirements, may result in order cancellations or
postponements of product purchases by our customers, which could harm our sales
and our reputation.

                         RISKS RELATED TO THIS OFFERING

WE HAVE BROAD DISCRETION TO USE THE OFFERING PROCEEDS, AND WE CANNOT ASSURE YOU
THAT HOW WE INVEST THESE PROCEEDS WILL YIELD A FAVORABLE RETURN.

    We intend to use the net proceeds from this offering to fund the expansion
of our business, our operating deficits and other working capital needs and for
general corporate purposes, as well as to repay short term debt. Thus, our
management will have broad discretion over how these proceeds are used and could
spend most of these proceeds in ways with which the stockholders may not agree.
We cannot assure you that the unapplied proceeds will be invested to yield a
favorable return.

DUE TO THE VOLATILE NATURE OF OUR INDUSTRY AND THE LACK OF A PRIOR PUBLIC MARKET
FOR OUR STOCK, OUR STOCK PRICE COULD EXPERIENCE SIGNIFICANT FLUCTUATIONS AND YOU
MAY NOT BE ABLE TO SELL YOUR SHARES AT OR ABOVE YOUR PURCHASE PRICE.

    Before this offering, there was no public market for our stock. An active
public market for our stock may not develop or be sustained after this offering.

    In recent years, the stock market in general, and the stock prices of
technology companies in particular, have been extremely volatile. The following
factors could cause the market price of our stock to fluctuate significantly
from the price paid by investors in this offering:

    - announcements by us or our competitors of significant contracts, new
      products or technological innovations, acquisitions, strategic
      relationships, joint ventures or capital commitments;

    - changes in financial estimates by securities analysts;

    - changes in market valuations of telecommunications companies; and

    - fluctuations in stock market prices and volumes.

    Our current stockholders hold a substantial number of shares which they will
be able to sell in the public market in the near future. Sales of these shares
after this offering could reduce the market price of our stock. In addition, the
sale of these shares could impair our ability to raise capital through the sale
of additional stock in the future at a time and price that we deem appropriate.

                                       14
<PAGE>
              CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

    We have made forward-looking statements that are not historical facts, but
rather are based on our current expectations, estimates and projections about
our industry and our management's beliefs and assumptions. Words such as
"anticipates," "expects," "intends," "plans," "believes," "seeks" and
"estimates" and variations of such words and similar expressions are intended to
identify such forward-looking statements. These statements are not guarantees of
future performance and are subject to certain risks, uncertainties and other
factors, some of which are beyond our control, that are difficult to predict and
could cause actual results to differ materially from those expressed or
forecasted in the forward-looking statements. These risks and uncertainties are
described in "Risk Factors" and elsewhere in this prospectus. We caution you not
to place undue reliance on these forward-looking statements which reflect our
management's view only as of the date of this prospectus.

                                USE OF PROCEEDS

    We estimate that we will receive net proceeds from the sale of our common
stock in this offering of approximately $80.9 million, or approximately
$88.0 million if the underwriters exercise their over-allotment option. This
estimate is after deducting underwriting discounts and commissions and other
fees and estimated expenses payable by us of approximately $7.5 million, or
approximately $8.0 million if the underwriters exercise their over-allotment
option. We will not receive any portion of the proceeds from the sale of shares
of stock by the selling stockholder.

    We will use $6.0 million of the net proceeds from this offering to repay
borrowings made under two secured promissory notes issued on August 4, 2000 to
an affiliate of the selling stockholder and to another stockholder. As of the
date hereof, we have borrowed $3.0 million under each of these notes, for a
total of $6.0 million. Each note bears interest at the rate of 6% per year and
matures on the earlier to occur of the closing of this offering or February 1,
2001. We intend to use approximately $20.0 million of the balance of the net
proceeds from this offering to fund the expansion of our business, approximately
$20.0 million to fund our anticipated operating deficits and the remainder of
the net proceeds for other working capital needs and for general corporate
purposes. As part of our ongoing corporate development activities, we expect we
will consider acquisition opportunities, and may use a portion of the net
proceeds to acquire complementary businesses, products or technologies.

    We currently intend to use substantially all of the net proceeds for the
categories mentioned above. However, the precise allocation of funds among these
uses will depend on future technological, regulatory and other developments
which may affect our business or our industry. Until we use the net proceeds for
any particular purpose, we will invest them in short-term, investment-grade,
interest-bearing securities.

                                DIVIDEND POLICY

    We have never declared or paid any cash dividends on our capital stock and
we do not anticipate doing so in the foreseeable future. It is the current
policy of our board of directors to retain earnings to finance the expansion of
our operations. The board of directors will determine future declaration and
payment of dividends, if any, in light of the then-current conditions, including
our earnings, operations, capital requirements, financial condition,
restrictions in financing agreements and other relevant factors.

                                       15
<PAGE>
                                 CAPITALIZATION

    The following table sets forth our capitalization as of June 30, 2000:

    - on an actual basis;

    - on a pro forma basis to reflect the automatic conversion of all of our
      outstanding shares of preferred stock into 9,084,913 shares of common
      stock upon the closing of this offering; and

    - on a pro forma as adjusted basis to reflect the sale of the common stock
      offered by this prospectus at the initial public offering price of $13.00
      per share and the receipt of the net proceeds therefrom, after deducting
      the estimated expenses and the underwriting discounts and commissions
      payable by us as if the sale of common stock and receipt of proceeds
      occured on June 30, 2000.

    This table contains unaudited information and should be read in conjunction
with our financial statements and related notes included elsewhere in this
prospectus.

<TABLE>
<CAPTION>
                                                                      JUNE 30, 2000
                                                           ------------------------------------
                                                                                     PRO FORMA
                                                            ACTUAL     PRO FORMA    AS ADJUSTED
                                                           --------   -----------   -----------
                                                            (IN THOUSANDS, EXCEPT SHARE DATA)
                                                                       (UNAUDITED)
<S>                                                        <C>        <C>           <C>
Capital lease obligations long term......................  $    304    $    304      $     304
Redeemable, convertible, participating preferred stock,
  $0.01 par value, 7,799,386 shares authorized, 7,799,386
  shares issued and outstanding, actual; no shares issued
  and outstanding, pro forma; no shares issued and
  outstanding, pro forma as adjusted.....................    30,861          --             --
Stockholders' equity (deficit):
  Common stock, $0.01 par value: 35,000,000 shares
    authorized, 15,389,122 shares issued and outstanding,
    actual; 24,474,035 shares issued and outstanding, pro
    forma; 31,274,035 shares issued and outstanding, pro
    forma as adjusted....................................       154         245            313
Additional paid-in capital...............................     6,906      37,676        118,495
Deferred stock compensation..............................    (3,445)     (3,445)        (3,445)
Accumulated deficit......................................   (25,568)    (25,568)       (25,568)
                                                           --------    --------      ---------
    Total stockholders' equity (deficit).................   (21,953)      8,908         89,795
                                                           --------    --------      ---------
    Total capitalization.................................  $ (9,212)   $  9,212      $  90,099
                                                           ========    ========      =========
</TABLE>

    This table excludes:

    - 5,297,662 shares of common stock subject to options outstanding as of
      June 30, 2000 under our 1999 stock incentive plan with a weighted average
      exercise price of $2.59 per share, and 1,359,597 shares of common stock
      available for future grant under the plan; and

    - 114,899 shares of common stock issuable upon exercise of outstanding
      warrants with a weighted average exercise price of $6.83 per share.

    From July 1, 2000 through August 31, 2000, we granted options under our 1999
stock incentive plan to purchase 47,000 shares of common stock with an exercise
price of $4.53 per share, and 167,500 shares of common stock with an exercise
price of $9.30 per share.

                                       16
<PAGE>
                                    DILUTION

    Our pro forma net tangible book value as of June 30, 2000 was approximately
$8.9 million, or $0.36 per share of common stock. Pro forma net tangible book
value represents the amount of total tangible assets less total liabilities,
divided by the number of shares of common stock outstanding. Without taking into
account any other changes in the net tangible book value after June 30, 2000,
other than to give effect to our sale of 6,800,000 of the shares of common stock
offered by this prospectus at the initial public offering price of $13.00 per
share, and our receipt of the estimated net proceeds from the sale, our as
adjusted pro forma net tangible book value as of June 30, 2000 would have been
approximately $89.8 million, or $2.87 per share. This represents an immediate
increase in pro forma net tangible book value of $2.51 per share to existing
stockholders and an immediate dilution of $10.13 per share to new investors. The
following table illustrates this per share dilution:

<TABLE>
<S>                                                           <C>        <C>
Initial public offering price per share.....................              $13.00
  Pro forma net tangible book value per share as of
  June 30, 2000.............................................   $0.36
  Increase per share attributable to this offering..........    2.51
                                                               -----
  Pro forma net tangible book value per share after this
    offering................................................                2.87
                                                                          ------
Dilution per share to new investors.........................              $10.13
                                                                          ======
</TABLE>

    The following table summarizes, on a pro forma as adjusted basis as of
June 30, 2000, the differences between existing stockholders and the new
investors with respect to the number of shares of common stock purchased from
Elastic Networks, the total consideration paid and the average price per share
paid, before deducting the underwriting discounts and commissions and estimated
offering expenses payable by Elastic Networks.

<TABLE>
<CAPTION>
                                     SHARES PURCHASED        TOTAL CONSIDERATION
                                   ---------------------   -----------------------   AVERAGE PRICE
                                     NUMBER     PERCENT       AMOUNT      PERCENT      PER SHARE
                                   ----------   --------   ------------   --------   -------------
<S>                                <C>          <C>        <C>            <C>        <C>
Existing stockholders............  24,474,035      78.3%   $ 33,512,134      27.5%      $ 1.37
New investors....................   6,800,000       21.7     88,400,000       72.5      $13.00
                                   ----------   --------   ------------   --------
  Total..........................  31,274,035     100.0%   $121,912,134     100.0%
                                   ==========   ========   ============   ========
</TABLE>

    The foregoing discussion and tables assume no exercise of any stock options
or warrants outstanding as of June 30, 2000. As of June 30, 2000, there were
options outstanding to purchase a total of 5,297,662 shares of common stock with
a weighted average exercise price of $2.59 per share and one warrant outstanding
to purchase 12,439 shares of common stock with an exercise price of $2.76 per
share. Subsequent to June 30, 2000, we issued warrants to purchase 102,460
shares of common stock with an exercise price of $7.32 per share. Also
subsequent to June 30, 2000, we issued options to purchase 47,000 shares of our
common stock with an exercise price of $4.53 per share and 167,500 shares of
common stock with an exercise price of $9.30 per share.

                                       17
<PAGE>
                   SELECTED HISTORICAL FINANCIAL INFORMATION

    Our selected historical financial information as of December 31, 1998 and
1999, and for each of the years in the three-year period ended December 31,
1999, have been derived from our financial statements, included elsewhere in
this prospectus, which have been audited by Deloitte & Touche LLP, independent
auditors, whose report thereon is also included elsewhere in this prospectus.
The selected financial information as of June 30, 2000 and for each of the six
month periods ended June 30, 1999 and 2000 has been derived from our unaudited
financial statements included elsewhere in this prospectus. For an explanation
of the determination of the number of shares used to compute basic and diluted
net loss per share, see note 2 of the notes to our financial statements. In the
opinion of management, these unaudited statements have been prepared on the same
basis as the audited financial statements and include all adjustments,
consisting only of normal recurring adjustments, that we consider necessary for
a fair presentation of our financial position and results of operations for
these periods.

    You should read the following selected historical financial and operating
data in conjunction with the discussion in "Management's Discussion and Analysis
of Financial Condition and Results of Operations" and our financial statements
and the related notes appearing elsewhere in this prospectus.

<TABLE>
<CAPTION>
                                                                                                   SIX MONTHS
                                                                 YEAR ENDED DECEMBER 31,         ENDED JUNE 30,
                                                              ------------------------------   -------------------
                                                                1997       1998     1999(1)    1999(1)    2000(1)
                                                              --------   --------   --------   --------   --------
                                                                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
                                                                                                   (UNAUDITED)
<S>                                                           <C>        <C>        <C>        <C>        <C>
STATEMENT OF OPERATIONS DATA:
  Total revenues............................................  $    --    $    233   $  8,215   $  2,600   $ 14,693
  Cost of revenues..........................................       --       2,146     14,290      5,509     14,131
                                                              -------    --------   --------   --------   --------
    Gross profit (loss).....................................       --      (1,913)    (6,075)    (2,909)       562
  Operating expenses:
    Sales and marketing (includes non-cash stock
      compensation expense of $0, $0, $25, $5 and $104).....      644       3,431      5,194      1,839      6,186
    Research and development (includes non-cash stock
      compensation expense of $0, $0, $76, $49 and $672)....    3,335       8,191      7,462      3,365      5,429
    General and administrative (includes non-cash stock
      compensation expense of $0, $0, $10, $2 and $41)......      524       1,695      2,174        683      2,259
                                                              -------    --------   --------   --------   --------
      Total operating expenses..............................    4,503      13,317     14,830      5,887     13,874
                                                              -------    --------   --------   --------   --------
        Operating loss......................................   (4,503)    (15,230)   (20,905)    (8,796)   (13,312)
  Other income (expense), net...............................       --          --        174         36         53
                                                              -------    --------   --------   --------   --------
    Net loss................................................   (4,503)    (15,230)   (20,731)    (8,760)   (13,259)
  Accretion of series A preferred stock.....................       --          --       (333)       (67)      (266)
                                                              -------    --------   --------   --------   --------
  Net loss attributable to common stockholders..............  $(4,503)   $(15,230)  $(21,064)  $ (8,827)  $(13,525)
                                                              =======    ========   ========   ========   ========
  Basic and diluted net loss per common share...............  $ (0.27)   $  (0.91)  $  (1.26)  $  (0.53)  $  (0.81)
                                                              =======    ========   ========   ========   ========
  Weighted average shares used in computing basic and
    diluted net loss per common share.......................   16,670      16,670     16,671     16,670     16,675
                                                              =======    ========   ========   ========   ========
  Pro forma basic and diluted net loss per common share
    (unaudited).............................................                        $  (1.03)             $  (0.58)
                                                                                    ========              ========
  Weighted average shares used in computing unaudited pro
    forma basic and diluted net loss per share amounts
    (unaudited).............................................                          20,548                23,504
                                                                                    ========              ========
</TABLE>

<TABLE>
<CAPTION>
                                                                 DECEMBER 31,
                                                              -------------------    JUNE 30,
                                                                1998     1999(1)      2000(1)
                                                              --------   --------   -----------
                                                                       (IN THOUSANDS)
                                                                                    (UNAUDITED)
<S>                                                           <C>        <C>        <C>
BALANCE SHEET DATA:
Cash, cash equivalents and short-term investments...........  $    --    $  5,613     $  4,518
Working capital (deficit)...................................   (2,955)     (1,632)       7,189
Total assets................................................    1,735       9,493       20,198
Capital lease obligations long-term.........................       --         100          304
Redeemable convertible participating preferred stock........       --       8,295       30,861
Total stockholders' equity (deficit)........................   (3,521)     (9,715)     (21,953)
</TABLE>

------------------------------
(1) As restated, see note 17 of the notes to our financial statements.

                                       18
<PAGE>
                    MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS

    THIS MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS SHOULD BE READ IN CONJUNCTION WITH OUR FINANCIAL STATEMENTS AND
THE RELATED NOTES. SEE NOTE 17 OF THE NOTES TO OUR FINANCIAL STATEMENTS FOR A
DISCUSSION OF THE EFFECTS OF THE RESTATEMENT OF OUR FINANCIAL STATEMENTS FOR THE
YEAR ENDED DECEMBER 31, 1999 AND THE SIX MONTHS ENDED JUNE 30, 1999 AND 2000.

OVERVIEW

    We design, develop and market high-speed DSL communications products that
enable service providers to deliver cost effective and easy to deploy broadband
access to their customers over the existing copper telephone wire
infrastructure.

    On January 1, 1997, Nortel Networks Corporation and its subsidiary Nortel
Networks Inc. established the Elastic Networks group to pursue the development
of EtherLoop technology and products. On September 22, 1998, Nortel Networks
incorporated a wholly-owned subsidiary, Elastic Networks Inc. On May 12, 1999,
Nortel Networks transferred the assets of the Elastic Networks group to us in
exchange for 15,384,614 shares of Elastic Networks' common stock. Also, on
May 12, 1999, we sold 3,876,923 shares of our series A preferred stock for
$12.6 million, comprised of $10.6 million in cash and $2.0 million in notes
receivable that have since been paid. We maintain a relationship with Nortel
Networks, including as a distribution and technology partner. Additionally, we
currently pay Nortel Networks a 2.5% royalty on sales of EtherLoop-based
products. Our obligation to pay this royalty will cease on the closing of this
offering.

    Since we were formed in January 1997 as a division of Nortel Networks
through mid 1999, our operating activities related primarily to developing our
EtherLoop technology and complementary software, building and testing prototype
products, building our technical support infrastructure, commencing the staffing
of our sales and marketing organization and establishing relationships with our
customers. In mid 1999, we commenced shipment of our commercial products and
have continued making investments to grow our business. As of June 30, 2000, we
had an accumulated deficit of $25.6 million.

    Our revenues have been generated principally from the sales of our first
generation DSL access multiplexers, or DSLAMs, which are known as ELMo DSLAMs
and which connect DSL modem signals to the Internet, our Elite DSL modems and,
to a lesser extent, our complementary software. We began limited shipment of our
first release DSLAM, the ELMo 8, in the second quarter of 1999. We began
shipping the ELMo 120 in the third quarter of 1999. Our recently announced Storm
System family of DSL access equipment, which we expect to begin shipping in the
fourth quarter of 2000, evolves our current product line. We expect to continue
to invest in product enhancements and new product development in order to
increase bandwidth and functionality and decrease cost. Additionally, we plan to
pursue both an original equipment manufacturer licensing strategy for our DSL
modems and a technology licensing strategy for our software and patented
EtherLoop technology. These licensing strategies are primarily intended to
accelerate our market penetration and to increase our gross margin.

    We recognize revenues from product sales upon shipment if collection of the
resulting receivable is probable, product pricing is fixed and determinable and
product returns are reasonably estimated. Revenues on products shipped on a
trial basis are recognized when products are accepted by the customer. Estimated
sales returns are based on historical experience by product and are recorded at
the time the product revenues are recognized. We currently have licensing
revenues and anticipate we will recognize increased licensing revenues in the
future. Technology licensing revenues are recognized ratably over the term of
the related agreement.

    For the fiscal year ended December 31, 1999, sales to Darwin and Nortel
Networks accounted for 81% of our revenues as follows: sales to Darwin accounted
for 41% of our revenues and sales to Nortel Networks, which included indirect
sales to Westcon, accounted for 40% of our revenues. In March 2000,

                                       19
<PAGE>
we entered into a separate distribution arrangement with Westcon under which
Westcon agreed to purchase our products directly from us instead of through our
distributors. For the six months ended June 30, 2000, sales to Darwin, Nortel
Networks and Westcon accounted for 76% of our revenues as follows: sales to
Darwin accounted for 41% of revenues, direct sales to Nortel Networks accounted
for 21% of our revenues and sales to Westcon accounted for 14% of our revenues.
We expect to continue to be dependent upon a relatively small number of
customers, although the specific customers may vary from period to period.
However, as we have continued to expand, and expect to continue to expand, our
customer relationships in 2000, we anticipate that our existing customers will
represent a smaller percentage of our revenues commencing in the fourth quarter
of 2000. Also, sales to our customers may be impacted by the potential seasonal
nature of their capital expenditures. In order to continue growing our revenues
and attain profitability, we must continue to invest in our international
operations. To date, our international sales have been denominated in U.S.
dollars and, accordingly, we have not been exposed to fluctuations in non-U.S.
currency exchange rates. In the future, a portion of our international sales may
be denominated in currencies other than U.S. dollars, which would expose us to
gains and losses upon exchange rate fluctuations. For the six months ended
June 30, 2000, 15% of our revenues were generated from international sales.

    Our gross margin is affected by many factors including competitive pricing
pressures, fluctuations in manufacturing volumes, costs of components and
sub-assemblies, and the mix of products or system configurations sold.
Additionally, our gross margin may fluctuate due to changes in our mix of
distribution channels. Our negative gross margin in 1999 was due primarily to
our sales of the first generation ELMo 8 access equipment. To date, gross margin
on sales of our DSLAMs has been higher than the gross margin on sales of our DSL
modems. Our gross margin was positive in the first six months of 2000, and we
expect our gross margin to increase in the future as we lower the cost of our
existing products, commence the sale of our Storm System family of products and
increase our licensing revenues.

    We currently outsource our manufacturing and supply chain management
operations to Sanmina. Sanmina conducts manufacturing engineering, quality
assurance, program management and product repairs. For this reason, a
significant portion of our cost of revenues consists of payments to Sanmina. If
we cease our relationship with Sanmina, we may be responsible for purchasing
some of their raw material inventory used to manufacture our products.

    Research and development expenses primarily consist of salaries and related
personnel expenses, non-cash stock compensation, contractor and consultant fees,
and prototype expenses related to the design, development, testing and
enhancement of our products. We expense all research and development expenses as
incurred. We believe that continued investment in research and development is
critical to attaining our strategic sales and cost-reduction objectives and, as
a result, we expect these expenses to increase in absolute dollars in the
future, but to decline as a percentage of revenues.

    We sell our products through a direct sales force and selected distributors
to domestic and international telecommunications and in-building service
providers. Sales and marketing expenses consist of employee salaries,
commissions, non-cash stock compensation, travel and related expenses for
personnel engaged in marketing, sales and sales support functions. These
expenses also include trade show and promotional expenses. We expect these
expenses to continue to increase in the future as we address additional domestic
and international markets. Sales and marketing expenses as a percentage of
revenues have not significantly changed in each of the last two quarters ended
June 30, 2000 even as we made significant investments in our sales force and
marketing initiatives. We expect these expenses to decline as a percentage of
revenues in the future.

    General and administrative expenses consist primarily of salaries and
related expenses for executive, finance, human resources and administrative
personnel, non-cash stock compensation, facilities expenses, information systems
and other general corporate expenses. We expect general and administrative
expenses

                                       20
<PAGE>
to increase in absolute dollars as we add personnel and incur additional costs
related to the growth of our business and operations as a public company, but
decline as a percentage of revenues.

    In connection with our grant of stock options during the year ended
December 31, 1999 and the six months ended June 30, 2000, we recorded deferred
compensation of $513,000 and $3.2 million, respectively. Stock-based
compensation includes the amortization of stock compensation charges resulting
from the grant of stock options to employees with exercise or sales prices that
may be deemed for accounting purposes to be below the fair market value of our
common stock on the date of grant and compensation expense associated with the
grant of stock options to non-employees. Deferred compensation amounts are
amortized over the vesting periods of the applicable options, which are
generally four years. The compensation expense associated with options granted
to non-employees is recorded at the time services are provided. See note 11 of
the notes to our financial statements.

RESULTS OF OPERATIONS

    The unaudited table below shows operating data, as a percentage of revenues,
for the periods indicated:

<TABLE>
<CAPTION>
                                                         YEAR ENDED               SIX MONTHS ENDED
                                                        DECEMBER 31,                  JUNE 30,
                                                    ---------------------       ---------------------
                                                      1998         1999           1999         2000
                                                    --------     --------       --------     --------
<S>                                                 <C>          <C>            <C>          <C>
Total revenues.................................         100%         100%           100%         100%
Cost of revenues...............................         921          174            212           96
                                                     ------       ------         ------       ------
    Gross profit (loss)........................        (821)         (74)          (112)           4
Operating expenses:
  Sales and marketing (1)......................       1,473           63             71           42
  Research and development (1).................       3,515           91            129           37
  General and administrative (1)...............         727           26             26           15
                                                     ------       ------         ------       ------
    Total operating expenses...................       5,715          180            226           94
                                                     ------       ------         ------       ------
      Operating loss...........................      (6,536)        (254)          (338)         (90)
Other income (expense), net....................          --            2              1           --
                                                     ------       ------         ------       ------
      Net loss.................................      (6,536)%       (252)%         (337)%        (90)%
                                                     ======       ======         ======       ======
</TABLE>

------------------------

(1) Includes non-cash stock compensation expense.

  SIX MONTHS ENDED JUNE 30, 1999 AND 2000

    TOTAL REVENUES.  Revenues increased from $2.6 million for the six months
ended June 30, 1999 to $14.7 million for the six months ended June 30, 2000.
This increase was primarily due to the successful transition from development of
our products to commencement of commercial operations and a significant increase
in the sales of our ELMo 120, which we introduced in the third quarter of 1999.
For the six months ended June 30, 1999, and June 30, 2000, we generated revenues
from international sales of $162,000 and $2.2 million, respectively.

    GROSS PROFIT (LOSS).  Gross profit (loss) improved from a loss of
$2.9 million for the six months ended June 30, 1999 to a profit of $562,000 for
the six months ended June 30, 2000. The improvement in gross profit (loss), in
absolute dollars and as a percentage of revenues, was primarily the result of
sales of our ELMo 120 and declines in component costs.

    SALES AND MARKETING.  Sales and marketing expenses increased from
$1.8 million for the six months ended June 30, 1999 to $6.2 million for the six
months ended June 30, 2000. This increase was primarily a

                                       21
<PAGE>
result of increases in staffing for marketing, account management, customer
support and direct sales, as well as increases in sales commissions. This
increase in sales and marketing expenses was also the result of our increased
investment in international operations and an increase in non-cash stock
compensation expense. Sales and marketing expenses as a percentage of revenues
significantly decreased as a result of the increase in our revenues.

    RESEARCH AND DEVELOPMENT.  Research and development expenses increased from
$3.4 million in the six months ended June 30, 1999 to $5.4 million in the six
months ended June 30, 2000. This increase in our research and development
expenses was primarily a result of additional hardware and software development
personnel. Additionally, non-cash stock compensation expense increased from
$49,000 in the six months ended June 30, 1999 to $672,000 for the six months
months ended June 30, 2000. Research and development expenses as a percentage of
revenues significantly decreased as a result of the increase in our revenues.

    GENERAL AND ADMINISTRATIVE.  General and administrative expenses increased
from $683,000 for the six months ended June 30, 1999 to $2.3 million for the six
months ended June 30, 2000. This increase was a result of an increase in
personnel related costs, including non-cash stock compensation expense and
increased expenditures on legal, accounting, information systems and consulting
fees. The increase in our general and administrative expenses was required to
support the growth in our operations, commercial activities and customer base.
General and administrative expenses as a percentage of revenues decreased as a
result of the increase in our revenues.

    OTHER INCOME (EXPENSE), NET.  Other income (expense), net increased from
$36,000 for the six months ended June 30, 1999 to $53,000 for the six months
ended June 30, 2000, resulting primarily from an increase in interest income
offset by royalty payments to Nortel Networks. Our royalty obligations to Nortel
Networks will terminate on the closing of this offering.

  YEARS ENDED DECEMBER 31, 1998 AND 1999

    TOTAL REVENUES.  Revenues increased from approximately $233,000 in the year
ended December 31, 1998 to $8.2 million in the year ended December 31, 1999.
This increase was primarily due to the successful transition from development of
our products to commencement of commercial operations and a significant increase
in the sales of our ELMo 8 and ELMo 120 access equipment that we introduced in
mid 1999. We generated revenues from international sales of $0 for the year
ended December 31, 1998 and $948,000 for the year ended December 31, 1999.

    GROSS PROFIT (LOSS).  Gross profit (loss) declined from a loss of
$1.9 million in the year ended December 31, 1998 to a loss of $6.1 million in
the year ended December 31, 1999. The increase in gross loss was primarily the
result of our selling products at prices that were less than our costs during
each year, together with increases in sales of our products. Additionally,
significant manufacturing support costs were incurred in the fourth quarter of
1999 while the products were undergoing continued redesign aimed at cost
reduction. The majority of these costs were non-recurring in nature, and were
incurred as we moved from manufacturing prototype products to manufacturing and
selling commercial products.

    SALES AND MARKETING.  Sales and marketing expenses increased from
$3.4 million in the year ended December 31, 1998 to $5.2 million in the year
ended December 31, 1999. This increase was primarily a result of increases in
staffing for marketing, account management, customer support and direct sales,
as well as increases in sales commissions. The majority of the increase in sales
and marketing expenses occurred in the fourth quarter of 1999 in support of the
ELMo 120 launch and the expansion of our international business.

    RESEARCH AND DEVELOPMENT.  Research and development expenses decreased from
$8.2 million in the year ended December 31, 1998 to $7.5 million in the year
ended December 31, 1999. This decrease in

                                       22
<PAGE>
our research and development expenses was primarily a result of a reduction in
contract development costs and the replacement of contractors with full time
employees. We expect to increase expenditures in research and development
programs in future periods for the purposes of reducing the costs of our
products and enhancing current and developing new products.

    GENERAL AND ADMINISTRATIVE.  General and administrative expenses increased
from $1.7 million in the year ended December 31, 1998 to $2.2 million in the
year ended December 31, 1999. This increase was primarily a result of an
increase in personnel-related costs and increased expenditures on legal,
accounting, information systems and consulting fees. The increase in our general
and administrative staffing was required to support the growth in our
operations, commercial activities and customer base.

    OTHER INCOME (EXPENSE), NET.  Other income (expense), net improved from $0
in the year ended December 31, 1998 to $174,000 in the year ended December 31,
1999 resulting primarily from an increase in interest income partially offset by
an increase of royalties paid to Nortel Networks. Our royalty obligations to
Nortel Networks terminate on the closing of this offering.

  YEARS ENDED DECEMBER 31, 1997 AND 1998

    TOTAL REVENUES.  Revenues increased from $0 in the year ended December 31,
1997 to $233,000 in the year ended December 31, 1998. This increase was due
primarily to licensing revenues related to our EtherLoop technology and limited
sales of our initial products. During 1997 and 1998 we continued to develop our
EtherLoop technology and DSL access products, but none of these products was
commercially released during these periods.

    GROSS PROFIT (LOSS).  Gross profit (loss) declined from $0 in the year ended
December 31, 1997 to a loss of $1.9 million in the year ended December 31, 1998.
The decrease in gross profit (loss) was primarily the result of significant
amounts of manufacturing costs we incurred in support of our DSL access
products.

    SALES AND MARKETING.  Sales and marketing expenses increased from $644,000
in the year ended December 31, 1997 to $3.4 million in the year ended
December 31, 1998. This significant increase was primarily a result of increases
in staffing for marketing, account management, customer support and direct
sales.

    RESEARCH AND DEVELOPMENT.  Research and development expenses increased from
$3.3 million in the year ended December 31, 1997 to $8.2 million in the year
ended December 31, 1998. This significant increase in our research and
development expenses was primarily a result of additional hardware and software
development personnel, including contractor expenses, related to the ongoing
commercial development of our products.

    GENERAL AND ADMINISTRATIVE.  General and administrative expenses increased
from $524,000 in the year ended December 31, 1997 to $1.7 million in the year
ended December 31, 1998. This increase was primarily a result of an increase in
personnel-related costs and increased expenditures on legal, accounting,
information systems and consulting fees. The increase in our general and
administrative staffing was required to support the growth in our operations,
commercial activities and customer base.

                                       23
<PAGE>
  QUARTERLY RESULTS OF OPERATIONS

    The following tables present unaudited quarterly operating results in
dollars and as a percentage of revenues. We believe this information reflects
all adjustments, consisting only of normal recurring adjustments, that we
consider necessary for a fair presentation of this information in accordance
with generally accepted accounting principles. The results for any quarter are
not necessarily indicative of results for any future period.

<TABLE>
<CAPTION>
                                                           THREE MONTHS ENDED(1)
                                     ------------------------------------------------------------------
                                     MARCH 31,   JUNE 30,   SEPT. 30,   DEC. 31,   MARCH 31,   JUNE 30,
                                       1999        1999       1999        1999       2000        2000
                                     ---------   --------   ---------   --------   ---------   --------
                                                               (IN THOUSANDS)
<S>                                  <C>         <C>        <C>         <C>        <C>         <C>
Total revenues....................    $   344    $ 2,256     $ 1,164    $ 4,451     $ 6,189    $ 8,504
Cost of revenues..................        803      4,706       1,844      6,937       6,056      8,075
                                      -------    -------     -------    -------     -------    -------
    Gross profit (loss)...........       (459)    (2,450)       (680)    (2,486)        133        429
Operating expenses:
  Sales and marketing (2).........        909        930       1,011      2,344       2,518      3,668
  Research and development (2)....      1,643      1,722       1,730      2,367       2,105      3,324
  General and administrative
    (2)...........................        375        308         754        737       1,260        999
                                      -------    -------     -------    -------     -------    -------
    Total operating expenses......      2,927      2,960       3,495      5,448       5,883      7,991
                                      -------    -------     -------    -------     -------    -------
      Operating loss..............     (3,386)    (5,410)     (4,175)    (7,934)     (5,750)    (7,562)
Other income (expense), net.......         --         36         132          6          78        (25)
                                      -------    -------     -------    -------     -------    -------
    Net loss......................    $(3,386)   $(5,374)    $(4,043)   $(7,928)    $(5,672)   $(7,587)
                                      =======    =======     =======    =======     =======    =======
</TABLE>

------------------------

(1) As restated, see note 17 of the notes to our financial statements.

(2) Includes non-cash stock compensation expense.

<TABLE>
<CAPTION>
                                                           THREE MONTHS ENDED(1)
                                     ------------------------------------------------------------------
                                     MARCH 31,   JUNE 30,   SEPT. 30,   DEC. 31,   MARCH 31,   JUNE 30,
                                       1999        1999       1999        1999       2000        2000
                                     ---------   --------   ---------   --------   ---------   --------
<S>                                  <C>         <C>        <C>         <C>        <C>         <C>
Total revenues....................      100%        100%       100%        100%       100%        100%
Cost of revenues..................      233         209        158         156         98          95
                                       ----        ----       ----        ----       ----        ----
    Gross profit (loss)...........     (133)       (109)       (58)        (56)         2           5
Operating expenses:
  Sales and marketing (2).........      264          41         87          53         41          43
  Research and development (2)....      478          76        148          53         34          39
  General and administrative
    (2)...........................      109          14         65          16         20          12
                                       ----        ----       ----        ----       ----        ----
    Total operating expenses......      851         131        300         122         95          94
                                       ----        ----       ----        ----       ----        ----
      Operating loss..............     (984)       (240)      (358)       (178)       (93)        (89)
Other income (expense), net.......       --           2         11          --          1          --
                                       ----        ----       ----        ----       ----        ----
    Net loss......................     (984)%      (238)%     (347)%      (178)%      (92)%       (89)%
                                       ====        ====       ====        ====       ====        ====
</TABLE>

------------------------

(1) As restated, see note 17 of the notes to our financial statements.

(2) Includes non-cash stock compensation expense.

                                       24
<PAGE>
LIQUIDITY AND CAPITAL RESOURCES

    Prior to May 1999, we operated as a division of Nortel Networks and all
operating deficits and capital expenditures were funded by Nortel Networks.
Since we became a separate company on May 12, 1999, we have financed our
operations and capital expenditures through the sale of equity and debt
securities and leases for capital equipment. On May 12, 1999, we sold shares of
our series A preferred stock for $12.6 million, comprised of $10.6 million in
cash and $2.0 million in notes that have since been paid. On February 14, 2000,
we sold shares of our series B preferred stock for $20.9 million, which resulted
in a significant increase in our working capital during the six months ended
June 30, 2000.

    At June 30, 2000, we had cash and cash equivalents and short term
investments of $4.5 million. On August 4, 2000, we borrowed $4.0 million under
two secured promissory notes issued to an affiliate of the selling stockholder
and another stockholder. On September 15, 2000, we borrowed an additional
$1 million under each of these notes, for a total of $6.0 million. Each note is
for an aggregate principal amount of up to $5.0 million, is secured by all of
our assets, bears interest at a rate of 6% per year and matures on the earlier
to occur of the closing of this offering or February 1, 2001. In connection with
this financing, we also issued warrants to these stockholders to purchase
102,460 shares of our series B preferred stock at any time prior to the closing
of this offering, or our common stock upon or after the closing of this
offering. These warrants are valued at approximately $657,000 and will be
amortized to interest expense over the life of the notes. Upon the closing of
this offering, we will repay all amounts outstanding under these notes, up to
the maximum available of $10.0 million, and they will no longer be available to
us.

    Cash used in operating activities was $11.9 million for the period ended
December 31, 1998 and $16.4 million for the period ended December 31, 1999. The
increase in cash used for operating activities for the year ended December 31,
1999 compared to the year ended December 31, 1998 was primarily due to increases
in net losses, accounts receivable and inventories as a result of the
introduction of and growth in demand for our products. This increase was
partially offset by increases in accounts payable and other accruals. Cash used
in operating activities for the period ended December 31, 1997 was $3.0 million
due to net losses of $4.5 million, partially offset by an increase of
liabilities of $1.5 million.

    Cash used in investing activities was $1.3 million for the period ended
December 31, 1998 and $2.4 million for the period ended December 31, 1999. The
increase in cash used for investing activities for the year ended December 31,
1999 compared to the prior year was primarily due to the net purchase of
$1.8 million in short term investments, partially offset by a reduction in
capital expenditures. Investing activities for the period ended December 31,
1997 consisted of expenditures for plant and equipment of $28,000.

    Cash provided by financing activities was $13.2 million for the period ended
December 31, 1998 and $22.7 million for the period ended December 31, 1999. For
the year ended December 31, 1998, cash was provided by Nortel Networks to fund
our operations during periods of operating losses and capital expenditures. The
increase in cash provided by financing activities for the year ended
December 31, 1999 compared to the year ended December 31, 1998 was primarily due
to the issuance of our series A preferred stock for $10.6 million in cash and
$11.9 million of cash provided by Nortel Networks prior to May 12, 1999 in
support of our operating losses and asset purchases. Financing activities for
the period ended December 31, 1997 consisted of funding by Nortel Networks of
$3.0 million.

    Our future capital requirements will depend upon many factors, including
sales of our products, the timing of research and product development efforts
and the expansion of our marketing efforts. We expect to continue to expend
amounts on property and equipment related to the expansion of facility
infrastructure, computer equipment and for research and development laboratory
and test equipment to support on-going research and development operations. We
have no material commitments other than obligations under our operating and
capital leases and our two secured promissory notes. In future periods, we
anticipate increases in working capital on a period-to-period basis primarily as
a result of planned increased product revenues.

                                       25
<PAGE>
    We believe that our cash and cash equivalent balances, short-term
investments and our expected net proceeds from this offering will be sufficient
to satisfy our cash requirements for at least the next 12 months. We intend to
invest our cash in excess of current operating requirements in short-term,
interest-bearing, investment-grade securities.

    Inflation has had no material impact on our operations to date.

COMPENSATION ARRANGEMENTS

    In fulfillment of compensation arrangements between Nortel Networks and some
of our employees relating to their prior employment with Nortel Networks, Nortel
Networks has agreed to pay these employees, if they are still working for
Elastic Networks at the time of payment, an aggregate of approximately
$13.4 million in cash. Of this amount, two-thirds will be paid at the time at
which Nortel Networks' ownership of our outstanding common stock falls below 50%
and the remaining one-third will be paid on the first anniversary of that date.
Upon the completion of this offering, Nortel Networks will own approximately 46%
of our outstanding common stock and will make a payment of approximately
$9.0 million to these employees; on the first anniversary of that date, Nortel
Networks will make a payment of approximately $4.4 million.

    In connection with these arrangements, we will record compensation expense
of approximately $9.0 million on the completion of this offering and
approximately $4.4 million over the following twelve months, and will record
capital contributions from Nortel Networks in equivalent amounts.

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

    Our investments are exposed to changes in interest rates primarily on our
investments in certain held-to-maturity securities. Under our current policies,
we do not use interest rate derivative instruments to manage exposure to
interest rate changes. A hypothetical 100 basis point adverse move in interest
rates along the entire interest rate yield curve would not materially effect the
fair value of interest sensitive financial instruments we held as at June 30,
2000.

RECENT ACCOUNTING PRONOUNCEMENTS

    In March 2000, the Financial Accounting Standards Board, or FASB, issued
FASB Interpretation No. 44, ACCOUNTING FOR CERTAIN TRANSACTIONS INVOLVING STOCK
COMPENSATION (AN INTERPRETATION OF THE ACCOUNTING PRINCIPLES BOARD OPINION
NO. 25). Among other issues, this interpretation clarifies:

    - the definition of employee for purposes of applying Opinion 25;

    - the criteria for determining whether a plan qualifies as a noncompensatory
      plan;

    - the accounting consequence of various modifications to the terms of a
      previously fixed stock option or award; and

    - the accounting for an exchange of stock compensation awards in a business
      combination.

    This interpretation became effective July 1, 2000, but certain conclusions
in this interpretation cover specific events that occur after either
December 15, 1998, or January 12, 2000. To the extent that this interpretation
covers events occurring during the period after December 15, 1998, or
January 12, 2000, but before the effective date of July 1, 2000, the effects of
applying this interpretation are recognized on a prospective basis from July 1,
2000. We are in the process of evaluating this new statement.

    In June 1998, the FASB issued Statements of Financial Accounting Standards
No. 133, "Accounting for Derivatives and Hedging Activities," or SFAS No. 133,
as amended by Statement of Financial Accounting Standards No. 137, "Accounting
for Derivative Instruments and Hedging Activities Deferral of the Effective Date
of FASB Statement No. 133," which established accounting and reporting standards
of

                                       26
<PAGE>
derivative instruments, including certain derivative instruments embedded in
other contracts, and for hedging activities. SFAS No. 133, as amended, is
effective for fiscal years beginning after June 15, 2000. In June 2000, the FASB
issued SFAS No. 138, "Accounting for Certain Derivative Instruments and Certain
Hedging Activities," which amends the accounting and reporting standards of SFAS
No. 133 for certain derivative instruments and certain hedging activities. We
are in the process of evaluating the effects of these new statements.

    In 1999, Staff Accounting Bulletin, or SAB, No. 101, REVENUE RECOGNITION IN
FINANCIAL STATEMENTS, was issued. The SAB provides guidance on the recognition,
presentation and disclosure of revenue in financial statements filed with the
SEC. Although SAB No. 101 does not change any of the accounting profession's
existing rules on revenue recognition, it draws upon existing rules and explains
how the SEC staff applies those rules, by analogy, to other transactions that
existing rules do not specifically address. SAB No. 101, as amended by SAB
No. 101B, becomes effective for the fourth fiscal quarter of fiscal years
beginning after December 15, 1999. We are in the process of assessing the impact
of SAB No. 101 on our financial statements. However, we do not expect that the
adoption of SAB No. 101 will have a material impact on our financial statements.

                                       27
<PAGE>
                                    BUSINESS

OVERVIEW

    We design, develop and market high-speed digital subscriber line, or DSL,
communications products that enable service providers to deliver cost-effective
and easy-to-deploy broadband access solutions to their customers over the
existing copper telephone wire infrastructure. We design our products based on
our patented EtherLoop technology to overcome many of the limitations of
conventional DSL technologies and improve quality of service. The performance
and cost advantages of our EtherLoop technology allow service providers to
maximize their infrastructure investment to meet their customers' growing demand
for broadband access and new, value-added services.

MARKET OPPORTUNITY

  GROWING DEMAND FOR BROADBAND ACCESS

    International Data Corporation projects that the number of worldwide
Internet users will grow from about 240 million in 1999 to over 600 million by
2003. As Internet usage becomes more prevalent, it is also becoming more
sophisticated. Businesses and individuals are using the Internet for more
advanced, mission critical activities such as e-commerce, customer support,
virtual private networking, telecommuting and distance learning. The Internet is
also quickly evolving into a highly interactive medium for communications,
entertainment and other applications, all of which require high-speed Internet
connectivity. However, we believe the true benefits of the interactive Internet
will not be realized without technology improvements in the portion of the
telephone network between the end user's premises and the service provider's
central office, known as the last mile or the local loop.

    The growing demand for broadband access presents an attractive new market
opportunity for service providers. The Telecommunications Act of 1996 has
facilitated this market opportunity by enabling more open access to the existing
local copper wire network. Telecommunications service providers that have chosen
to take advantage of this greater access are generally known as competitive
local exchange carriers, or CLECs. According to the Association for Local
Telecommunications Services, the number of CLECs grew from about 50 in 1996 to
over 375 by the end of 1999, and they are investing on average over $1 billion
per month, in the aggregate, on their networks. As competition increases,
service providers will need to offer a broader range of voice, data and other
value-added offerings in order to effectively differentiate their services. We
believe that the proliferation of new services will create a greater need for
broadband access.

    While the market opportunity to deliver broadband access is significant, its
current penetration rates outside of the larger business market remain low. In
the United States, according to International Data Corporation statistics, of
the small businesses with Internet access in 1999, more than 90% still used
conventional dial-up connections rather than dedicated high-speed connections.
Data communication speeds have traditionally been limited because the existing
telecommunications equipment was originally built to support analog voice rather
than bandwidth intensive data. There are a number of existing high-speed digital
access technologies that are intended to address the connectivity limitations,
including integrated services digital network, or ISDN, T-1 digital transmission
technology, fiber optics and cable and wireless solutions. However, these
technologies have their own limitations, such as high cost, complex deployment
and security and performance issues. DSL technology was developed to overcome
some of these issues by taking advantage of the existing copper wire
infrastructure while providing a cost-effective connectivity solution for that
part of the network between the end user and the end user's service provider.

  DSL TECHNOLOGY OVERVIEW

    DSL technology has the capability to enable broadband data transmission at
speeds up to one hundred times faster than those of traditional analog
technology, using the same copper telephone wires. A DSL solution typically
consists of the end user's DSL modem and a device, commonly known as a DSL
access multiplexer, or DSLAM, that connects the signals from users' DSL modems
with the Internet or other networks. The DSLAM is located in a service
provider's facility or on the premises where multiple end users are located,
such as hotels, multi-tenant business complexes and apartment buildings.

                                       28
<PAGE>
    Conventional DSL access technologies have several key advantages that
include:

    - HIGH-SPEED ACCESS. DSL technology provides high-speed, fixed upstream and
      downstream broadband access at speeds ranging from 150 kilobits per
      second, or Kbps, up to millions of bits per second.

    - SECURE, DEDICATED BANDWIDTH. Unlike shared services such as cable, DSL
      technology provides a dedicated point-to-point connection, increasing line
      security and maintaining high levels of performance even as new users are
      added to the network.

    - WIDESPREAD COVERAGE. According to the International Telecommunications
      Union, the worldwide installed base of copper telephone lines exceeds
      850 million, providing the capability to deploy DSL services to a
      significant base of potential end users.

    Despite their advantages, conventional DSL technologies have significant
limitations, such as:

    - INEFFICIENT BANDWIDTH UTILIZATION. Conventional DSL technologies have
      fixed upstream and downstream bandwidth, and they cannot automatically
      allocate bandwidth depending on usage needs. As a result, they do not
      efficiently utilize available bandwidth to manage the amount of data
      transmitted through the line to support bandwidth intensive, interactive
      Internet applications.

    - SIGNAL INTERFERENCE. Sending high-speed data requires substantial signal
      levels and power, which, when delivered through the copper wire, can lead
      to signal leaks and create interference with the other signals in the same
      bundle of lines. This problem is known as cross talk interference. Since
      conventional DSL technologies operate with a continuously powered fixed
      frequency transmission signal, they do not have the flexibility to monitor
      other line signals and adjust the frequency of the signal to avoid
      interference.

    - COMPLEX, COSTLY DEPLOYMENT AND OPERATION. The installation of conventional
      DSL technologies is often a time consuming, manual process. Service
      providers must generally test and adjust the copper telephone lines during
      installation in order to overcome transmission obstacles caused by the
      presence of different sized wires within the network and improperly
      connected line extensions. This process requires costly, labor intensive
      service calls and increases installation time. Also, most DSL equipment
      requires a conversion of the communications signal between a
      communications standard known as asynchronous transfer mode, or ATM, and
      Internet protocol, or IP, the Internet communications standard. This
      conversion adds further complexity and cost.

    - LIMITED SCALABILITY. Each type of conventional DSL technology addresses
      different needs such as distance, speed or voice. However, they are not
      compatible with each other. This incompatibility prevents the service
      provider from delivering, and the end user from experiencing, the full
      range of benefits that DSL technologies promise.

    - DISTANCE LIMITATIONS. DSL is limited by the distance between the end
      user's modem and the device that connects it with the Internet or other
      networks, known as the DSLAM. The signal strength sent across the copper
      line dissipates the farther it travels between the DSLAM and the end user,
      currently limiting reliable DSL deployment to distances of about 18,000
      feet.

    While conventional DSL technologies provide multiple benefits, we believe
that the majority of service providers have been unable to cost-effectively
provide widespread DSL services to their customers because of its limitations.

                                       29
<PAGE>
THE ELASTIC NETWORKS SOLUTION

    Our patented EtherLoop technology provides a next generation access solution
that overcomes many of the limitations of conventional DSL technologies. Our
access solution enables service providers to simplify DSL deployment and provide
a cost-effective means of delivering high-speed access to more of their
subscriber base. Our products can be deployed in a service provider's facility
to reach business and residential users or on any premises where multiple end
users are located such as hotels, multi-tenant business complexes, apartment
buildings, condominiums and university campuses.

    Our solution offers the following benefits:

    - MAXIMIZE AVAILABLE BANDWIDTH.  Our products enable service providers to
      deliver an array of services and applications, including Internet access,
      virtual private networking, videoconferencing, video on demand and
      Internet protocol-based voice services, on a common platform. Our access
      products and EtherLoop technology currently allow our customers to deliver
      bandwidth of up to 4 Mbps, automatically allocating downstream and
      upstream bandwidth based on user requirements. This capability enables
      service providers to maximize available bandwidth and provide additional
      revenue generating services.

    - AVOID INTERFERENCE.  Our EtherLoop technology constantly monitors
      interference on each line over which EtherLoop signals are transmitted. It
      can automatically adjust transmission frequencies in order to avoid
      potential noise and interference caused by other high-speed data services.
      EtherLoop also adjusts its transmission frequency to avoid interfering
      with other signals in the same bundle of lines. These advantages enable
      service providers to deploy more broadband lines in each bundle of lines
      while providing a higher quality of service.

    - EASY TO DEPLOY AND USE.  Our products allow service providers to
      cost-effectively utilize the existing copper wire infrastructure to easily
      deploy high-speed access to their subscribers. Unlike most other access
      products, our technology can be deployed without the need for costly
      re-engineering or rewiring of the local network or time consuming service
      calls. Our customer premises equipment products, such as our DSL modems,
      allow for quick and easy end user installation, reducing the need for
      professional installation services. Further, our YesWare software enables
      end users to easily and quickly access the Internet without having to
      install special software or modify computer settings.

    - HIGHLY SCALABLE.  Our access products incorporate interchangeable modules,
      which enable the quick adjustment of features without the cost of having
      to replace the entire access solution. Service providers can easily and
      quickly increase bandwidth and increase or change the number of lines
      served to address functionality and cost requirements. Because
      EtherLoop-based products are designed for deployment in outside plant
      applications, such as locations serviced by local digital communications
      service providers and multi-tenant business complexes, service providers
      can use our products to reach more of their subscribers.

    - GREATER TRANSMISSION DISTANCE.  Our technology also provides reliable
      service coverage beyond the typical range of conventional DSL
      technologies. With this extended reach, service providers are able to
      deliver high-speed access to more of their subscriber base. Additionally,
      unlike conventional DSL technologies, EtherLoop transmits signals in small
      packets that are capable of being repeated to extend service over even
      greater distances.

STRATEGY

    Our objective is to become a leading provider of next generation DSL access
technology. Key elements of our strategy include:

    - CONTINUING TO CAPITALIZE ON THE ADVANTAGES OF OUR ETHERLOOP
      TECHNOLOGY.  We will continue to devote substantial resources to further
      develop our EtherLoop technology to enhance the functionality, bandwidth
      and scalability of our access solutions. Our recently announced Storm

                                       30
<PAGE>
      System products are designed to enhance scalability by increasing upstream
      and downstream access speeds to 6 Mbps and above and by significantly
      increasing the number of DSL connections provided by each access
      multiplexer. Additionally, we will continue enhancing our software
      solutions to provide tools that increase the value-added functionality of
      our products, including bandwidth management, provisioning and quality of
      service offerings. As our EtherLoop technology continues to advance, we
      believe that we will be able to effectively service a greater percentage
      of the significant market for high-speed access.

    - EXPANDING OUR PENETRATION WITHIN THE BROADBAND ACCESS MARKET.  We plan to
      expand our distribution channels to meet the growing demand for business
      and residential broadband access. While we initially focused our sales
      efforts on the hospitality industry, we have since expanded these sales
      efforts to reach other market opportunities. Our products are now deployed
      in diverse in-building environments, including hotels, apartment buildings
      and university campuses, as well as in central office facilities. Our new
      Storm System products will also allow us to expand product deployment to
      the large number of subscribers not directly connected to a central
      office, such as subscribers served by outside plant equipment.

    - INCREASING OUR DIRECT AND INDIRECT SALES CHANNELS AND EXPANDING
      INTERNATIONALLY.  We intend to utilize our direct and indirect sales
      channels to increase market penetration of our access products. We will
      continue to increase our sales presence in the growing U.S. and Asian
      markets. We also plan to expand our sales efforts into other emerging
      international markets such as Europe and Latin America. To complement our
      direct channels, we intend to strengthen our relationships with resellers
      and other distributors, such as Nortel Networks, Westcon and Williams
      Communications Solutions, LLC.

    - LEVERAGING OUR BUSINESS RELATIONSHIPS.  We have established business
      relationships with a variety of companies, including Nortel Networks and
      Texas Instruments for technology and product development and Sanmina for
      manufacturing. These relationships enable us to leverage the
      infrastructure and capabilities of established industry leaders, helping
      us to improve our products, lower our costs and increase our speed to
      market. We intend to continue to develop these and additional business
      relationships.

    - DEVELOPING OUR LICENSING STRATEGY.  We plan to license our EtherLoop
      technology to third parties to facilitate integration of our technology
      into new product developments. Additionally, we intend to license our
      YesWare software as a stand-alone application to in-building operators to
      allow them to increase their control over their telecommunications access
      billing and management functions. Furthermore, we plan to pursue a
      strategy of entering into relationships with original equipment
      manufacturers to expand the market penetration of our customer premises
      equipment. By licensing our technology and entering into original
      equipment manufacturer relationships, we can increase market adoption of
      our technology, help promote new applications for our access solution and
      improve our margins.

CORE TECHNOLOGY

    Our patented EtherLoop technology combines the benefits of Ethernet
technology and conventional digital subscriber line, or DSL, into a next
generation DSL technology. EtherLoop technology leverages Ethernet's ability to
efficiently transmit signals by dividing large amounts of data into smaller
packets that are transmitted in intervals or bursts. EtherLoop utilizes DSL's
ability to transmit these data packets over existing copper telephone lines.
EtherLoop's unique technology advantages deliver a robust access solution with
the following benefits:

    ETHERLOOP AUTOMATICALLY ALLOCATES BANDWIDTH.  EtherLoop constantly monitors
both upstream and downstream data signal bandwidth requirements and
automatically allocates all available bandwidth for maximum utilization. For
instance, if the downstream signal needs only 10% of the available bandwidth,
but the upstream signal needs 90%, EtherLoop will allocate the necessary
bandwidth to the upstream

                                       31
<PAGE>
signal. As bandwidth requirements change, EtherLoop reallocates the available
bandwidth, providing enhanced performance over other fixed bandwidth solutions.

    ETHERLOOP REDUCES INTERFERENCE.  EtherLoop technology reduces interference
in telephone lines caused by the presence of multiple signals within the same
bundle of lines, by transmitting small packets of data in bursts, instead of a
constant signal stream. As a result, EtherLoop can actively monitor and adjust
its transmission frequency to avoid interference and conflicts with other
signals in the same bundle of lines, all without sacrificing speed or data
quality. This automatic frequency adjustment can also increase speed and data
quality because it greatly reduces the need for retransmission of signals
degraded by line interference and transmission conflicts. This functionality
also allows service providers the flexibility to deploy our solution in the same
bundle of lines with other voice and high-speed data services without
compromising signal quality.

    ETHERLOOP PROVIDES IP CONNECTIVITY.  EtherLoop eliminates the need for
conversion of data between asynchronous transfer mode, a telephone network
standard, and Internet protocol, the Internet communications standard. This
efficient form of data communications reduces costs and complexity, increases
the amount of data transmitted through the line and improves the quality of
service.

    ETHERLOOP-BASED PRODUCTS ARE EASY TO INSTALL AND REDUCE THE NEED FOR SERVICE
CALLS.  Unlike many conventional DSL technologies, EtherLoop reduces the
complexity and expense of the installation process and increases deployment
speed. Our solution generally does not require local telephone line network
re-engineering or rewiring as EtherLoop can operate on copper phone lines
regardless of changes in wire sizes within the network and improperly connected
telephone line extensions. Without the need to recondition or rewire the lines,
our EtherLoop technology significantly reduces the requirement for installation
service calls. Our technology also allows end users to easily connect to the
Internet, reducing the need for professional installation.

    ETHERLOOP ENABLES HIGH-SPEED DATA TRANSMISSION OVER LONGER
DISTANCES.  Communications speed and bandwidth decrease as the distance between
the end user and the service provider's Internet connection increases. EtherLoop
addresses this limitation by combining Ethernet's data packet transmission
technology with advanced frequency adjustment capabilities to provide high-speed
communications beyond the reach of conventional DSL technologies. EtherLoop
continually monitors and determines the characteristics of each line to provide
the best frequency and bandwidth available. In addition, we are currently
developing products to incorporate into our DSL solution that will be able to
leverage the efficiencies of data packet delivery to extend the signal out to
longer distances while maintaining high data transmission speeds and signal
quality.

PRODUCTS

    We provide an end-to-end solution of Internet protocol DSL access
multiplexers, DSL modems and complementary software, either as a complete
solution or as individual components. Service providers use our products to
deliver DSL broadband access services to their end users. These products are
installed in telecommunications service provider facilities, such as central
office locations, or on any premises where multiple end users are located, such
as multi-tenant buildings and hotels. The following diagram highlights where our
products reside in the typical network:

                                       32
<PAGE>
                                   [GRAPHIC]
1. In the top left corner are the words "Central Office" and images of our IP
DSLAM and Server that contains system management software with lines connecting
both to graphics of a public telephone network slightly above and an Internet
"cloud" below. In the top right corner is a box with the words "In-Home" at the
top and a picture of our DSL Modem with lines connecting it to a desktop
computer and a telephone to the right. Below the "In-Home" box is a box with the
words "In-Office" at the top and pictures of our DSL Modem with lines connecting
it to a desktop computer, a telephone and our Ethernet extension port that
connects to a laptop computer. Dashed lines are drawn from these figures to our
"Central Office" images.

2. In the bottom left corner are the words "In-Building" and images of our IP
DSLAM and Server that contains YesWare software with lines connecting both to
graphics of a public telephone network slightly above and an Internet "cloud"
above. A dashed line connects this to a box to the right with the words "In-
Room" at the top that includes a picture of a standard hotel telephone with our
eSled DSL Modem which is attached to the bottom of the hotel telephone and
connected by a line to a laptop computer.

    In addition to the features inherent in our core EtherLoop technology,
including Internet protocol connectivity, automatic bandwidth allocation,
reduced interference, ease of deployment and greater transmission distances, our
products offer many additional features discussed below.

  CURRENT PRODUCTS

    ELMO 8 IP DSLAM.  The ELMo 8 IP DSLAM offers the following features:

    - Ability to provide service to up to eight lines;

    - Up to eight modem cards with 4 Mbps of dedicated bandwidth;

    - A filter card for directing voice traffic to the public telephone network;

    - A port card for distributing high speed data traffic to an external wide
      area network device;

                                       33
<PAGE>
    - Compliance with Networking Equipment Building Standards Level 3 and 10
      Base-T Ethernet standards; and

    - A 48 volt power card.

    ELMO 120 IP DSLAM.  The ELMo 120 IP DSLAM offers the following features:

    - Ability to provide service to up to 120 lines;

    - Up to ten modem cards, each supporting up to twelve lines sharing 4 Mbps
      of bandwidth;

    - An optional filter shelf supporting up to 120 lines that directs voice
      traffic to the public telephone network;

    - A port card for distributing high speed data traffic to an external wide
      area network device;

    - Compliance with Networking Equipment Building Standards Level 3 and 10/100
      Base-T Ethernet standards; and

    - A 48 volt power card.

    ELITE MODEM.  The Elite is the EtherLoop modem connecting end user voice and
data equipment to the network. It offers the following features:

    - Up to 4 Mbps of bandwidth that is automatically allocated upstream and
      downstream depending on usage requirements;

    - A standard Ethernet 10 Base-T connector and phone jack;

    - Easy to install--plugs into a standard wall jack;

    - Always connected to the network--no need to dial-up;

    - Supports both single user and small work group applications; and

    - Powered by 110/120 VAC.

    We also offer an auxiliary connection device, an Ethernet extension port, to
connect the end user's device to the Elite modem where there is limited desktop
space.

    ESLED.  This product attaches to the bottom of Teledex manufactured hotel
telephones and provides the same connectivity as our standard Elite modem
without occupying additional desktop space.

    YESWARE.  Our YesWare software, which resides on our Linux-based YesWare
server, provides port authorization, billing and provisioning and administrative
functions to network managers of EtherLoop-based high-speed access services.
With YesWare operations, administration, maintenance and provisioning software,
network managers can assign modems to individual users, monitor performance,
remotely download new firmware to modems and troubleshoot network issues. In
addition, for hospitality customers, YesWare visitor-based networking software
enables customer plug and play connectivity with no laptop reconfiguration,
direct or credit card billing for hotel guests, interface to hotel property
management systems and other revenue generating features.

  RECENTLY ANNOUNCED PRODUCTS

    In June 2000, we announced our Storm System family of products, which we
expect to begin shipping in the fourth quarter of 2000. The Storm System family
evolves our current product line in the following ways:

    - Storm System Internet protocol DSL access multiplexers that connect
      signals from users' DSL modems with the Internet or other networks are
      designed on a single shelf chassis, based on the ELMo 120 architecture;

    - Additional modem cards enable our access equipment to support greater
      bandwidth and access lines;

                                       34
<PAGE>
    - The introduction of Internet protocol policy management that allows
      service providers to intelligently manage bandwidth, access and service
      characteristics in order to provide new multi-media services; and

    - The introduction of a wide area network device that provides
      high-bandwidth connectivity between our access equipment and the network.

    The Storm System family consists of the following products designed to
enable the complete delivery and management of Internet protocol services:

    - BITSTORM IP DSLAMS. This product will deliver automatically allocated
      bandwidth of up to 6 Mbps and beyond over a single copper line. Added
      capability can be provided by the optional layer 3 switch and the
      subscriber management gateway. The layer 3 switch eliminates traditional
      routers, sets priorities for network traffic and manages bandwidth. The
      subscriber management gateway feature enables service providers to manage
      bandwidth allocation, monitor network activity, provide online security
      functions and perform other subscriber management services.

    - STORMPORT MODEM DEVICES. The StormPort family of end user devices will
      connect end user voice and data equipment to our access equipment, which
      is connected to the network, and enable plug and play connectivity.

    - STORMTRACKER. StormTracker software, which will reside on our Linux-based
      BitStorm server, will provide operations, administration, maintenance and
      provisioning tools to enable easy management of Storm System components.
      StormTracker will also include Spectrum Manager, an optional feature that
      allows service providers to control EtherLoop's line interference
      monitoring-and-avoidance technology. The Spectrum Manager feature will
      also permit the graphical display of line transmission characteristics.

    - MICROBURST. This Internet protocol access device will permit the
      deployment of multiple DSL lines in remote locations. It is designed for
      deployment in multi-tenant business complexes and locations not directly
      connected to the central office, such as outside plant applications.

RESEARCH AND DEVELOPMENT

    We continually review and evaluate technological changes affecting the
telecommunications market and invest in research and development to address
those changes. We are committed to an ongoing program of new product development
that combines internal development efforts and licensing arrangements for new
products and technologies from other sources.

    We have focused our recent research and development expenditures on four
areas: application specific integrated circuit chip development for increased
bandwidth of our EtherLoop technology of up to 10 Mbps and above, advanced
Internet protocol switching techniques, high-speed access connectivity devices
and enhanced communications software.

    Research and development expenses were $3.3 million in 1997, $8.2 million in
1998 and $7.5 million in 1999. We intend to increase our investment in research
and development in the future.

PROFESSIONAL SERVICES

    Our professional services department supports our customers in the timely
deployment of our products at customer sites. The department outsources many
professional services to independent service organizations, including GTE
Communications and Tstaff, Inc. The department also provides our customers with
technical assistance on a twenty-four hours a day, seven days a week basis, as
needed.

CUSTOMERS

    We target our sales efforts to various categories of service providers
operating in the market for high-speed access, both in the United States and
internationally. To date, customer installations have ranged from in-building
applications, including hotels, apartment buildings and university campuses, to
service

                                       35
<PAGE>
providers' central office locations used to reach both business and residential
users. The following is a list of service providers who purchase our products
directly from us or through our distributors and resellers, Nortel Networks,
Westcon and Williams Communications. Unless otherwise noted below, none of these
service providers accounted for greater than 5% of our revenues for either the
year ended December 31, 1999 or the six month period ended June 30, 2000.

<TABLE>
<CAPTION>
UNITED STATES BASED SERVICE PROVIDERS          INTERNATIONAL BASED SERVICE PROVIDERS
---------------------------------------------  ---------------------------------------------
<S>                                            <C>
BellSouth Communications Systems, LLC          Beijing Keval On-Line Technology, Ltd.
CAIS Internet, Inc.                            Coventus Inc.
Citizens Communications Company                New T & T Hong Kong Limited
Darwin Networks, Inc.                          OverNet Inc.
Everest Broadband Networks, Inc.
Grand River Mutual Telephone Corporation
Oregon Trail Internet, Inc.
Prism Communications Services, Inc.
UniversalCom, Inc.
U.S. Online, Inc. member ISPs
</TABLE>

    In 1999, sales to Darwin and Nortel Networks represented 81.1% of our
revenues. Sales to Darwin accounted for 41.3% of our revenues and sales to
Nortel Networks, which included indirect sales to CAIS and Westcon, accounted
for 39.8% of our revenues during that period. In March 2000, we entered into a
distribution arrangement with Westcon, and in June 2000 we entered into a direct
sales relationship with CAIS, under which arrangements Westcon and CAIS each
agreed to purchase our products directly from us instead of through our
distributors. In the first six months of 2000, direct sales to CAIS accounted
for 7.6% of our revenues, direct sales to Darwin accounted for 40.9% of our
revenues, direct sales to Nortel Networks accounted for 21.5% of our revenues
and direct sales to Westcon accounted for 13.7% of our revenues. Included in
sales to Nortel Networks and Westcon were indirect sales to Coventus accounting
for 5.6% of our revenues and indirect sales to Everest accounting for 7.4% of
our revenues. Prior to this offering, Nortel Networks provided significant
equipment financing arrangements to Darwin and CAIS for purchases of our
products. These financing arrangements will not be available from Nortel
Networks for purchases of our products after the completion of this offering.

    As we have continued to expand, and expect to continue to expand, our
customer relationships in 2000, we anticipate that our existing customers will
represent a smaller percentage of our revenues commencing in the fourth quarter
of 2000.

SALES AND MARKETING

    We sell and market our products on a worldwide basis through both direct and
indirect channels. In the first six months of 2000, our revenues from
international sales were 15% of total revenues, and revenues from domestic sales
were 85% of total revenues. Direct sales accounted for 63% of our revenues and
indirect sales accounted for 37% of our revenues in the first six months of
2000.

    DIRECT SALES.  Our direct sales efforts are managed through directors and
managers who are responsible for specific customer accounts. Relationships we
establish at various levels in our customers' organizations are key to our sales
efforts. The sales management team for each customer maintains contact with key
customer representatives who have planning and policy responsibility within
their organizations. At the same time, our sales engineers work with customers
to sell our products at key levels through the customer's organization. We
currently have sales offices in Atlanta, Georgia and Hong Kong.

    INDIRECT SALES.  Our sales team works closely with our distribution partners
to identify customer prospects and fulfill market demand. These relationships
allow us to effectively sell to smaller service providers.

                                       36
<PAGE>
    MARKETING.  We structure our marketing efforts along product lines and
distribution channels. We employ product marketing specialists who perform the
following functions:

    - communications and promotions;

    - market research and competitive analysis, including pricing and
      positioning;

    - development of specific marketing strategies for each product line;

    - coordination with our direct and indirect sales forces to develop key
      account and market strategies;

    - definition of product and service functions and features; and

    - sales support.

    Our marketing efforts are further augmented by our participation in the
Network Reliability and Interoperability Council V, an FCC implemented
commission that concentrates on spectral compatibility issues.

MANUFACTURING

    Our manufacturing operations consist primarily of supporting prototype
development, materials planning and procurement, final assembly, testing and
quality control. We use independent suppliers to provide certain printed circuit
boards, chassis and subassemblies for our products. We currently outsource
substantially all of our final manufacturing and testing to Sanmina.

    Although we generally use standard parts and components for our products,
our products contain several key components that are purchased from single
source suppliers: line driver chips from Texas Instruments, power supplies from
Astec America Inc. and system processor chips from Motorola Inc. We do not have
written agreements with our single source suppliers. We generally purchase
components on a purchase order basis, as opposed to entering into long-term
procurement agreements. To date, we have generally been able to obtain adequate
supplies in a timely manner from vendors or, when necessary, to meet production
needs from alternative vendors. We believe that, in most cases, alternative
parts and components suppliers can be identified if current vendors fail to
fulfill our requirements.

COMPETITION

    We operate in the highly competitive telecommunications access industry. We
believe that competition may increase substantially with the introduction of new
technologies, deployment of new broadband communications networks and potential
changes in the regulatory environment which may create new opportunities for
established and emerging companies. Our current and prospective competitors
include many large companies that have substantially greater operating
histories, market presence, financial, technical, marketing and other resources
than we have. We currently compete directly or indirectly with various providers
of DSL technology, including Alcatel, Cisco Systems, Copper Mountain, Lucent
Technologies, Nokia, Nortel Networks and Tut Systems.

    In addition, DSL technology competes with alternative access technologies,
such as integrated services digital network, or ISDN, T-1 digital transmission
technology, fiber optics and cable and wireless solutions. Each of these
technologies utilizes alternative transmission methods, and each has advantages
over, and disadvantages to, DSL technology. Depending on the technology
platform, the advantages can include higher speed transmission, a more extensive
network, a broader base of existing customers and easier installation. Providers
of such alternative technologies include AT&T and Time Warner, each of which has
made significant investments in technology and assets for broadband cable
Internet access. However, each of these alternative technologies also has
disadvantages to DSL, such as shared bandwidth, which results in security
issues, and decreasing transmission speeds and service reliability. These
disadvantages, in turn, result in higher installation and deployment costs. As
these alternative technologies continue to develop and grow, each will exert
increasing competitive pressure on us, which could slow our growth and reduce
our market share, revenues and profits.

                                       37
<PAGE>
    The rapid technological developments within the telecommunications industry
have resulted in frequent changes in our group of competitors. The principal
competitive factors in our market include:

    - system reliability and performance;

    - key product features, such as bandwidth and distance;

    - ease of installation and use;

    - standards compliance;

    - technical support and customer service; and

    - price.

INTELLECTUAL PROPERTY

    We rely on a combination of copyright, trademark, patent and trade secret
laws and contractual restrictions to establish and protect our technology and
proprietary rights. We require employees and consultants and, when possible,
suppliers and distributors, to sign confidentiality agreements. However, we
cannot assure you that our steps will be sufficient to prevent misappropriation
of our technology and proprietary rights and information, or that our
competitors will not independently develop technologies that are substantially
equivalent or superior to ours. In addition, the laws of many foreign countries
do not protect our intellectual property to the same extent as the laws of the
United States. From time to time, we may desire or be required to renew or
obtain licenses from other parties in order to further develop and market
commercially viable products. There can be no assurance that any necessary
licenses will be available upon acceptable terms.

    PATENTS AND PATENT LICENSES.  We own U.S. patent number 5,912,895, titled
"Information Network Access Apparatus and Methods for Communicating Information
Packets via Telephone Lines," which generally covers the communication of
Ethernet data frames between modems by using a technology that transmits data in
small packets sent in intervals instead of as a continuous signal, and a
technology for avoiding signal interference within the transmission line. This
patent issued on June 15, 1999 and expires on May 1, 2016. Australia has also
granted us a patent on this technology and we have applied for patents in
Canada, Japan and the European Community. Our rights to this patent are subject
to certain licenses that Nortel Networks, as the original owner, granted to
other parties prior to May 12, 1999. Although we have granted back to Nortel
Networks a license to practice the patented technology, Nortel Networks has
agreed not to compete with us by practicing this technology prior to May 12,
2002. We have also granted Nortel Networks a license to all improvements to this
patented technology that we may make or acquire. Nortel Networks does not have
the right to sublicense this technology except in limited circumstances such as
when Nortel Networks resells our products containing the technology.

    We also have exclusive licenses from Nortel Networks to two patent pending
technologies and non-exclusive licenses to two patent pending technologies, to
two other patented technologies and to one technology for which no patent is
pending, all of which we use in our business. The exclusive licenses are subject
to certain licenses that Nortel Networks, as the original owner, granted to
other parties prior to May 12, 1999. In addition, we have granted Nortel
Networks a license, with a limited right to grant sublicenses, to the
technologies covered by all of these licenses and to any improvements to these
technologies that we may acquire or make. We have also granted Nortel Networks a
license to any patents that we own, acquire, or that result from our filing
applications or from our obtaining a license, during any period that Nortel
Networks owns more than 50% of our voting securities. Both of these licenses to
Nortel Networks are subject to their obligation not to compete with us with
respect to EtherLoop-based products prior to May 12, 2002. The exclusivity
provisions of the exclusive licenses granted to us by Nortel Networks expire
after May 12, 2004, after which time our licenses become non-exclusive. These
licenses expire on the dates the patents expire, unless the patents earlier
terminate, or upon termination of the license arrangements. The license
arrangements may be terminated by either party upon a material breach, or by
Nortel Networks if we become insolvent or bankrupt.

                                       38
<PAGE>
    We pay Nortel Networks royalties for our use of the licensed technologies;
however, our royalty obligations will end on the closing of this offering. For a
detailed discussion of our royalty obligations, please refer to "Related Party
Transactions."

    TRADEMARKS.  We have a United States trademark registration on the mark ELMo
and a Canadian trademark registration on the mark EtherLoop. We also have
pending United States and foreign trademark applications for our other marks. We
also claim common law protection for all our marks, including Elastic Networks,
Elastic, EtherLoop, the Elastic logo, ELMo, Elite, Spectrum Manager, YesWare,
Storm System, BitStorm, MicroBurst, eSled, StormPort and StormTracker.

    An opposition to our registration of the trademark "YesWare" was filed on
June 12, 2000. We are currently assessing this opposition to determine the
effect, if any, this may have if it is successful. If this opposition succeeds,
we will not be able to register this trademark and may be required to rename our
YesWare product or license the trademark from the opposing party.

EMPLOYEES

    As of August 31, 2000, we employed approximately 166 full time employees,
including 49 in sales and marketing, 11 in manufacturing, 53 in research and
development, 15 in finance and administration and 38 in professional services.
None of our employees is represented by a labor union, we have no collective
bargaining agreement and we believe our relations with our employees are good.

FACILITIES

    We lease a 14,000 square foot facility in Alpharetta, Georgia, which serves
as our principal engineering and product development facility. The current lease
for this facility expires in May 2003. We also lease another 14,000 square foot
facility in Alpharetta, Georgia for executive offices and for administrative,
sales and marketing purposes. The lease for this facility expires in
August 2002, with an option to renew for a nine month term ending May 2003. We
lease an additional 25,000 square foot facility in Alpharetta, Georgia, which is
used primarily for our professional services team and for warehouse space. The
lease for this facility expires in November 2003.

LEGAL PROCEEDINGS

    We are not currently a party to any material legal proceedings.

                                       39
<PAGE>
                                   MANAGEMENT

EXECUTIVE OFFICERS AND DIRECTORS

    Our executive officers and directors, the positions held by them and their
ages as of August 31, 2000 are as follows:

<TABLE>
<CAPTION>
NAME                                             AGE      POSITION(S)
----                                           --------   -----------
<S>                                            <C>        <C>
Guy D. Gill..................................      47     President, Chief Executive Officer and Chairman
                                                          of the Board of Directors
Michael S. VanPatten.........................      47     Senior Vice President, Business Development
Kevin D. Elop................................      35     Chief Financial Officer, Secretary and Treasurer
Robert T. Gallagher..........................      38     Vice President, Engineering
Thomas J. Gallo..............................      42     Vice President, Worldwide Sales
Phillip L. Griffith..........................      43     Vice President, Marketing
Larry R. Hurtado.............................      38     Vice President, Global Operations
Gary S. Palmer...............................      55     Vice President, Professional Services
Steven J. Benson (2).........................      41     Director
Charles G. Betty (2).........................      43     Director
Thomas M. Manley.............................      42     Director
Gerald A. Poch...............................      53     Director
Jerome L. Rhattigan (2)......................      58     Director
Richard G. Reid (1)..........................      53     Director
</TABLE>

------------------------

(1) Member of compensation committee.

(2) Member of audit committee.

    GUY D. GILL, one of our co-founders, has served as our president and as a
director since September 1998. He became our chief executive officer and
chairman of our board of directors in May 1999. From January 1999 until May
1999, Mr. Gill served as president of the Elastic Networks group of Nortel
Networks Inc., a global telecommunications services company. From January 1998
through January 1999, Mr. Gill was president and chief executive officer of
Arris Interactive, L.L.C., a cable telephony joint venture between Nortel
Networks and ANTEC Corporation. From December 1995 to January 1998, Mr. Gill
served as vice president and general manager of Nortel Networks' access networks
division. From January 1994 through December 1995, he was vice president,
customer network solutions, of Nortel Networks Inc. Mr. Gill has 23 years of
telecommunications experience with Nortel Networks in positions in general
management, sales, marketing and finance. He previously served on the board of
directors of Arris Interactive and NetSpeed, Inc.

    MICHAEL S. VANPATTEN has served as our senior vice president, business
development since January 2000. From October 1997 through January 2000 he was
senior vice president of ViaGate Technologies, Inc., which designs, develops and
distributes multimedia access products to telecommunication services companies.
From January 1997 to September 1997 he was vice president of marketing for DAGAZ
Technologies, Inc., which designs, develops and distributes multimedia access
products to telecommunication services companies. From 1994 to 1996,
Mr. VanPatten served as vice president of marketing and engineering for
Microdyne Corporation, a computer networking company.

    KEVIN D. ELOP has served as our chief financial officer since June 2000 and
as treasurer and corporate secretary since May 1999. From June 1998 through
May 1999, he served as the director of finance and administration for the
Elastic Networks group of Nortel Networks. From January 1990 through June 1998,
Mr. Elop served in various capacities at Nortel Networks, including as senior
manager for corporate consolidations, senior manager for external reporting and
accounting research, manager of finance systems and manager of enterprise
networks finance.

                                       40
<PAGE>
    ROBERT T. GALLAGHER has served as our vice president, engineering since
January 2000. Prior to that, he worked at ADC Telecommunications, Inc., a
telecommunications business, from August 1994, where he served as manager of
development engineering from August 1994 to August 1995, director of design
engineering from August 1995 through September 1997 and vice president of design
engineering from September 1997 through January 2000.

    THOMAS J. GALLO has served as our vice president, worldwide sales since
June 1999. From July 1998 through June 1999, he served as North American
business director for business partners of Nortel Networks. From July 1997
through June 1998, Mr. Gallo served as director, small/medium business VAR sales
of Bay Networks, Inc., a networking products manufacturer, and from March 1996
through June 1997 he served as director, Internet CPE sales for Bay Networks.
From June 1995 to March 1996, he was vice president, sales for Performance
Technology, Inc., a local area network to Internet connectivity hardware and
software solutions company.

    PHILLIP L. GRIFFITH has served as our vice president, marketing since
May 1999. Prior to that, Mr. Griffith served in various positions at Nortel
Networks. From June 1998 through May 1999, he served as vice president, sales
and marketing for Elastic Networks group of Nortel Networks. From June 1997
through June 1998, he served as Nortel's regional vice president, wireless
networks. From June 1995 through June 1997, Mr. Griffith served as Nortel's vice
president of sales, wireless networks for the southeast United States.

    LARRY R. HURTADO, one of our co-founders, has served as our vice president,
global operations since March 2000. From January 2000 to March 2000 he served as
our vice president, technology and operations and from May 1999 through
January 2000, he served as our vice president, engineering, technology and
operations. From October 1998 through May 1999, Mr. Hurtado served as vice
president, business line management for the Elastic Networks group of Nortel
Networks. From September 1997 through October 1998 he served as the director,
business line management of the Elastic Networks group. From September 1996
through September 1997, Mr. Hurtado founded and served as a principal of the
Lighthouse Group, a technology consulting company, and from July 1995 through
September 1996, he served as vice president and general manager of Medaphis
Corporation, a medical technology provider.

    GARY S. PALMER has served as our vice president, professional services since
December 1999. From June 1999 through December 1999 he served as vice president
operations for the AT&T global account of Nortel Networks. Prior to June 1999,
Mr. Palmer served in various other capacities at Nortel Networks including as
vice president, North American installation, vice president of customer service,
BellSouth account, vice president of customer service, BellAtlantic account and
vice president of customer service, Teligent account.

    STEVEN J. BENSON has served as a director since August 2000. Mr. Benson has
served as president, chief executive officer and a director of MCK
Communications, Inc., a manufacturer of remote voice products, since June 1997.
From November 1992 through June 1997, he served as senior vice president of
worldwide sales and marketing for Shiva Corporation, a manufacturer of data
access products.

    CHARLES G. BETTY has served as a director since August 2000. Mr. Betty has
served as chief executive officer and as a director of EarthLink, Inc. since
February 2000, and as president and a director of its predecessor, EarthLink
Network, Inc. since January 1996. In May 1996 he was named chief executive
officer of EarthLink Network, Inc. From February 1994 to January 1996,
Mr. Betty was a strategic planning consultant. From September 1989 to February
1994, Mr. Betty served as president, chief executive officer and a director of
Digital Communications Associates, Inc., a network connectivity provider.

    THOMAS M. MANLEY has served as a director since May 1999. Mr. Manley has
served as vice president, finance of Nortel Networks' service provider and
carrier group since October 1999. Prior to that, Mr. Manley served as vice
president, finance of Nortel Networks' carrier packet solutions group since

                                       41
<PAGE>
September 1997. From September 1995 to September 1997 he served as a vice
president and general manager of Nortel Networks' advanced public access systems
division.

    GERALD A. POCH has served as a director since May 1999. Mr. Poch has served
as managing director of Pequot Capital Management, Inc., a venture capital fund
management company, since January 2000. From August 1998 through January 2000,
he was a principal of Pequot Capital Management. From August 1996 to June 1998
he was the chairman, president and chief executive officer of GE Capital
Information Technology Solutions, Inc., a technology solutions provider. Prior
to that, he was a founder, and served as co-chairman and co-president, of
AmeriData Technologies, Inc., a value added reseller and systems integrator of
hardware and software systems. Mr. Poch is co-chairman of MessageMedia, Inc. and
a director of FutureLink Corp. and BriteSmile, Inc.

    JEROME L. RHATTIGAN has served as a director since August 2000.
Mr. Rhattigan has served as principal of HireUp, Inc., an executive search firm
focused on the communications industry, since October 1999. Prior to that,
Mr. Rhattigan worked from February 1993 to September 1999 as an outside
consultant and an associate partner of Andersen Consulting to help build its
communications practice.

    RICHARD G. REID has served as a director since May 1999. Mr. Reid has a
30 year career with Nortel Networks. Currently, Mr. Reid is president of Nortel
Networks' emerging service provider market segment. Before that, Mr. Reid was
president of Nortel Networks' global carrier solutions CLECs/IXCs business unit.
Mr. Reid has also served as Nortel Networks' vice president and general manager,
DMS-100, vice president and managing director, private switching for Europe,
Middle East and Africa, and managing director and vice president in the United
Kingdom.

    There are no family relationships among any of the directors or executive
officers of Elastic Networks.

SPECIAL TECHNOLOGY CONSULTANT

    JOHN B. (JACK) TERRY invented EtherLoop technology while serving as an
assistant vice president of Nortel Networks. Mr. Terry was a co-founder of the
Elastic Networks group of Nortel Networks serving as its chief technical officer
from its creation in January 1997 until his retirement from Nortel Networks in
December 1998. We have retained him since February 1999 as our special
technology consultant for the further development of our technology and
products. He holds numerous patents in a variety of fields and has chaired and
presented papers at many key conferences during the past 30 years. Mr. Terry is
a Fellow of the IEEE, recipient of the IEEE 1995 Engineering Leadership Award,
Fellow of the International Engineering Consortium, a Senior Member of the SCTE
and a member of Sigma Xi.

BOARD OF DIRECTORS

    Immediately prior to the completion of this offering, our second amended and
restated certificate of incorporation will take effect and provide for a
classified board of directors consisting of three classes of directors, each
serving staggered three-year terms. As a result, a portion of our board of
directors will be elected each year. To implement the classified structure,
Messrs. Poch and Rhattigan have been designated class I directors, whose terms
will expire at the annual meeting of stockholders to be held in 2001,
Messrs. Reid and Gill have been designated class II directors, whose terms will
expire at the annual meeting of stockholders to be held in 2002 and
Messrs. Manley, Benson and Betty have been designated class III directors, whose
terms will expire at the annual meeting of stockholders to be held in 2003.

BOARD COMMITTEES

    Our board of directors has two committees: an audit committee and a
compensation committee. The audit committee consists of Messrs. Benson, Betty
and Rhattigan. Mr. Reid is currently the sole member of the compensation
committee; however, our board intends to appoint additional members in the near
future. The audit committee reviews the results and scope of our annual audit
and meets with our

                                       42
<PAGE>
independent auditors to review our internal accounting procedures and financial
management practices. The compensation committee makes recommendations
concerning salaries, stock options, incentives and other forms of compensation
for our directors, officers and other employees, subject to ratification by our
full board of directors.

DIRECTOR COMPENSATION

    Our directors are reimbursed for certain expenses in connection with
attendance at board and committee meetings. In addition, we grant stock options
to our independent directors in connection with their service to us. These
option grants are structured as follows:

    - an initial grant of options to purchase 30,000 shares of our common stock,
      vesting annually over the director's initial term of office beginning on
      the first May 15 following the grant; and

    - additional annual grants of options to purchase 15,000 shares of our
      common stock, vesting equally over three years beginning one year from the
      date of grant.

EXECUTIVE COMPENSATION

    The following table provides information concerning compensation awarded to,
earned by or accrued for services rendered to us in all capacities during the
year ended December 31, 1999 by (i) our chief executive officer and (ii) our two
other most highly compensated executive officers whose salary and bonus totaled
at least $100,000 for the fiscal year. Together, they are referred to as the
Named Executive Officers.

    Cash payments for services prior to May 12, 1999, were made by Nortel
Networks. All bonus amounts were paid by Nortel Networks and related to the
period before May 12, 1999.

                           SUMMARY COMPENSATION TABLE

<TABLE>
<CAPTION>
                                                                                  LONG-TERM
                                                            ANNUAL              COMPENSATION
                                                         COMPENSATION       ---------------------
                                                      -------------------   SECURITIES UNDERLYING
NAME AND PRINCIPAL POSITION                            SALARY     BONUS          OPTIONS (#)
---------------------------                           --------   --------   ---------------------
<S>                                                   <C>        <C>        <C>
Guy D. Gill.........................................  $247,206   $46,070          1,319,192
  President, Chief Executive
    Officer and Chairman of the Board
Phillip L. Griffith.................................   185,147    37,446            271,838
  Vice President, Marketing
Larry R. Hurtado (1)................................   164,529    28,297            400,257
  Vice President, Global Operations
</TABLE>

------------------------

(1) In January 1999, Nortel Networks granted to Mr. Hurtado, for his services to
    the Elastic Networks group, options to purchase 32,000 shares of Nortel
    Networks Corporation common stock at an exercise price of $15.5325 per
    share. Approximately 10,667 of these options have vested. The remaining
    options will be cancelled upon the completion of this offering.

OPTION GRANTS IN LAST FISCAL YEAR

    The following table describes options that we granted in 1999 to the Named
Executive Officers. These options were granted with an exercise price equal to
the fair market value of our common stock on the date of grant as determined by
our board of directors. Options for Messrs. Gill, Griffith and Hurtado are
incentive stock options except for 1,042,647 of Mr. Gill's options, 172,930 of
Mr. Hurtado's options and 70,733 of Mr. Griffith's options which are
non-qualified and vest over four years. Ten percent of the stock

                                       43
<PAGE>
options vested on the grant date, 15% vested on the first anniversary of the
grant date and the balance vest monthly over the three-year period commencing on
May 13, 2000. The options have a ten-year term.

    The potential realizable value is calculated by assuming that the price of
our common stock increases from an assumed fair market value of $10.00 per
share, at assumed rates of stock appreciation of 5% and 10%, compounded annually
over the 10 year term of the option, and subtracting from that result the total
option exercise price.

    The 5% and 10% assumed annual rates of compound stock price appreciation are
prescribed by the rules and regulations of the Securities and Exchange
Commission and do not represent our estimate or projection of the future trading
prices of our common stock. There can be no assurance that the actual stock
price appreciation over the ten-year option term will be the assumed 5% or 10%
levels or any other defined level. Actual gains, if any, on stock option
exercises are dependent on numerous factors, including our future performance,
overall market conditions and the option holder's continued employment with us
throughout the entire vesting period and option term, none of which are
reflected in this table.

<TABLE>
<CAPTION>
                                                    INDIVIDUAL GRANTS                      POTENTIAL REALIZABLE
                                   ---------------------------------------------------       VALUE AT ASSUMED
                                   NUMBER OF    PERCENTAGE OF                              ANNUAL RATES OF STOCK
                                   SECURITIES   TOTAL OPTIONS                             PRICE APPRECIATION FOR
                                   UNDERLYING    GRANTED TO     EXERCISE                      THE OPTION TERM
                                    OPTIONS     EMPLOYEES IN      PRICE     EXPIRATION   -------------------------
NAME                                GRANTED      FISCAL YEAR    PER SHARE      DATE          5%            10%
----                               ----------   -------------   ---------   ----------   -----------   -----------
<S>                                <C>          <C>             <C>         <C>          <C>           <C>
Guy D. Gill......................  1,284,192        30.7%         $2.07      05/13/09    $18,259,857   $30,650,356
Phillip L. Griffith..............    256,838         6.1           2.07      05/13/09      3,651,966     6,130,062
                                      15,000         0.4           2.07      12/15/09        213,284       358,011
Larry R. Hurtado.................    385,257         9.2           2.07      05/13/09      5,477,949     9,195,092
                                      15,000         0.4           2.07      12/15/09        213,284       358,011
</TABLE>

AGGREGATE OPTION EXERCISES IN LAST FISCAL YEAR AND YEAR END OPTION VALUES

    The following table provides information about stock options held at
December 31, 1999 by the Named Executive Officers. As of December 31, 2000, none
of these options had been exercised.

<TABLE>
<CAPTION>
                                                    NUMBER OF SECURITIES
                                                         UNDERLYING               VALUE OF UNEXERCISED
                                                     UNEXERCISED OPTIONS          IN-THE-MONEY OPTIONS
                                                     AT FISCAL YEAR-END            AT FISCAL YEAR-END
                                                 ---------------------------   ---------------------------
NAME                                             EXERCISABLE   UNEXERCISABLE   EXERCISABLE   UNEXERCISABLE
----                                             -----------   -------------   -----------   -------------
<S>                                              <C>           <C>             <C>           <C>
Guy D. Gill....................................    128,419       1,155,773      $183,639      $1,652,755
Phillip L. Griffith............................     25,684         246,154        36,728         352,000
Larry R. Hurtado...............................     38,525         361,732        55,091         517,277
</TABLE>

EMPLOYMENT CONTRACTS AND CHANGE-IN-CONTROL ARRANGEMENTS

    EMPLOYMENT AGREEMENTS AND INCENTIVE AND NONSTATUTORY STOCK OPTION AGREEMENTS
ENTERED INTO WITH OUR NAMED EXECUTIVE OFFICERS.  On May 12, 1999, we entered
into four-year employment agreements with Guy Gill, Phillip Griffith and Larry
Hurtado. Under the agreements, Mr. Gill is entitled to receive a base salary of
$260,000 per year, Mr. Griffith is entitled to receive $180,300 per year and
Mr. Hurtado is entitled to receive $150,500 per year. In addition, Mr. Gill is
entitled to reimbursement for up to $10,000 of expenses incurred in connection
with personal financial, estate planning and tax assistance services and
automobile operating expenses, and both Mr. Griffith and Mr. Hurtado are
entitled to reimbursement of up to $5,000 per year for similar expenses.
Mr. Gill is also entitled to reimbursement for country club membership expenses.

    On May 13, 1999, we granted Mr. Gill incentive stock options to purchase
241,545 shares of our common stock and non-qualified stock options to purchase
1,042,647 shares of our common stock,

                                       44
<PAGE>
Mr. Griffith incentive stock options to purchase 197,361 shares and
non-qualified stock options to purchase 59,477 shares, and Mr. Hurtado incentive
stock options to purchase 223,583 shares and non-qualified stock options to
purchase 161,674 shares, each at an exercise price of $2.07 per share. Ten
percent of the stock options vested on the grant date, 15% vested on the first
anniversary of the grant date and the balance vest monthly over the three-year
period commencing on May 13, 2000. If we are acquired by another company and the
options are not assumed by the acquiring company, then the options shall fully
vest and be exercisable for 45 days after that date.

    If we terminate Mr. Gill's employment other than for cause, or if Mr. Gill
terminates his employment for good reason, we must pay Mr. Gill a lump severance
payment calculated over a severance period equal to the shorter of 18 months or
the time remaining in the term of the agreement, but not less than 12 months. If
we terminate Mr. Griffith's or Mr. Hurtado's employment other than for cause, or
if either terminates his employment for good reason, we must pay him a lump sum
severance payment calculated over a severance period equal to 12 months. The
payment will equal the sum of the base salary the terminated employee would have
received during the severance period, plus an amount to pay for health and other
insurance benefits during the severance period, plus a bonus amount based on the
terminated employee's meeting 100% of all performance requirements.

    Effective May 12, 2000, we increased Mr. Gill's annual salary to $275,000,
Mr. Griffith's to $190,000 and Mr. Hurtado's to $185,000.

COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION

    Mr. Reid and one other non-employee director who resigned from our board of
directors in June 2000 served during the year ended December 31, 1999 as members
of the compensation committee of our board of directors. No executive officer of
Elastic Networks has served as a director or member of the compensation
committee, or other committee serving an equivalent function, of any other
entity, any of whose executive officers served as a director of or member of the
compensation committee of our board of directors.

1999 STOCK INCENTIVE PLAN

    Our 1999 Stock Incentive Plan provides for the grant of incentive stock
options, within the meaning of Section 422 of the Internal Revenue Code of 1986,
to our employees and nonstatutory stock options and stock based awards to our
employees, directors, consultants and advisors. A total of 6,661,766 shares of
common stock have been reserved for issuance under the plan. As of August 31,
2000, options to purchase an aggregate of 5,512,612 shares were outstanding,
23,293 shares of common stock had been purchased through exercises of stock
options and 1,126,311 shares were available for future grant.

    The plan is administered by the board of directors, or a committee appointed
by the board of directors, which determines the terms of options granted,
including the exercise price and the number of shares subject to each option.
The board of directors also determines the vesting schedule. The maximum number
of shares with respect to which options may be granted per participant is
2,000,000 shares per calendar year. The term of options granted under the plan
is ten years. The exercise price of incentive stock options must be at least
equal to the fair market value of our common stock on the date of grant. The
aggregate fair market value of the shares of common stock with respect to which
incentive stock options are exercisable for the first time by an optionee during
any calendar year (under all of our and our affiliates' plans) may not exceed
$100,000, or the portion of those options which exceed this limit shall be
treated as nonstatutory stock options.

                                       45
<PAGE>
    Under the plan, shares subject to stock awards that have expired or
otherwise terminated without having been exercised in full again become
available for grant.

    Except as the board of directors may otherwise provide, options are not
transferable by the optionee, and each option is exercisable during the lifetime
of the optionee only by the optionee. Options must be exercised within 60 days
after the end of optionee's status as an employee, director or consultant of
Elastic Networks, or within twelve months after his or her termination by
disability or death, to the extent that the option is vested on the date of
termination, but in no event later than the expiration of the option's term.

    The plan provides that in the event we merge with or into another
corporation, or we sell all or substantially all of our assets, each outstanding
option shall be assumed or an equivalent option substituted by the successor
corporation. If the outstanding options are not assumed or substituted, the
options will become immediately exercisable and vested in full. The options
shall then be exercisable for at least 45 days. The board of directors may amend
or modify the plan at any time, except that without the consent of the
stockholders, no amendment or modification shall adversely affect rights and
obligations with respect to outstanding options. Unless sooner terminated by the
board of directors, the plan will terminate in May 2009.

ACCELERATED VESTING PLAN

    We have adopted a plan that allows, upon our change in control, salaried
employees, service providers and independent contractors designated by our board
of directors to exercise 50% of their then unvested common stock options granted
under our 1999 stock incentive plan. Generally, a change in control includes:

    - our complete liquidation;

    - the sale of all or substantially all of our assets; or

    - a merger or consolidation which results in our outstanding voting
      securities immediately prior to such merger or consolidation representing
      less than 50% of the voting power of the surviving entity after such
      merger or consolidation.

COMPENSATION CONTINUATION PLAN

    We have adopted a plan that allows salaried employees designated by our
board of directors who are terminated for any reason other than cause,
disability or death within one year after a change in control of our company, to
be entitled to twelve months of continuing compensation, including:

    - continued payment of their annual base salary;

    - payment of incentive compensation assuming a 100% performance level; and

    - medical, dental, retirement and other benefits.

EMPLOYEE STOCK PURCHASE PLAN

    We have adopted, subject to the closing of this offering, an employee stock
purchase plan intended to qualify under Section 423 of the Internal Revenue
Code. This plan will permit participants to purchase common stock through
payroll deductions of up to 15% of the participant's compensation. All payroll
deductions will be credited to the participant's account under the plan. The
plan will contain successive six-month offering periods beginning on January 1
and July 1 of each year. On the first day of each offering period, a participant
will receive options to purchase a certain number of shares of our common stock
with funds withheld from his or her compensation. The purchase price of our
common stock to plan

                                       46
<PAGE>
participants will generally be 85% of the lower of the fair market value of our
common stock at the beginning or end of each offering period.

    A total of 500,000 shares of our common stock will be reserved for issuance
under this plan, subject to adjustment for certain changes in our
capitalization. Our employees will be eligible to participate if they have been
continuously employed by us or any participating subsidiary for at least 20
hours per week and for one year as of the first day of an offering period.
However, the following employees may not be granted options to purchase stock
under this plan:

    (i)  employees who, immediately after grant would own stock possessing 5% or
       more of the total combined voting power or value of all classes of our
       capital stock; or

    (ii) employees whose rights to purchase stock under all of our employee
       stock purchase plans accrue at a rate which exceeds $25,000 worth of
       stock for each calendar year.

    Participants will be allowed to withdraw all, but not less than all, of the
payroll deductions credited to their account for an offering period at any time
by delivering written notice to us at least ten days prior to the end of that
offering period. Participation will end automatically upon termination of
employment, retirement or death.

                                       47
<PAGE>
                           RELATED PARTY TRANSACTIONS

INITIAL FORMATION

    On May 12, 1999, Elastic Networks Inc. began doing business as a separate
company as a result of a contribution agreement among Nortel Networks Inc.,
Nortel Networks Corporation and us. Nortel Networks Inc. is a wholly-owned
subsidiary of Nortel Networks Corporation. Under this agreement, we issued
Nortel Networks Inc. 15,384,614 shares of our common stock and assumed all of
Nortel Networks' obligations related to the Elastic Networks group, including
those described below. Prior to this offering, Nortel Networks Inc. transferred
8,948,770 shares of our common stock to its parent, Nortel Networks Limited,
which is selling 1,000,000 of those shares in this offering. At the same time,
Nortel Networks Inc. transferred to Nortel Networks Limited a warrant to
purchase 51,230 shares of our capital stock.

    Because we were a division of Nortel Networks and all of our officers were
employees of Nortel Networks prior to the execution of the contribution
agreement, the value of the shares issued to Nortel Networks in exchange for the
assets of the Elastic Networks group was not arrived at by an arm's-length
negotiation between Nortel Networks and us. Rather, as part of the transfer of
assets, Nortel Networks determined that the value of shares to be paid for its
Elastic Networks business would be the net book value of the assets being
transferred, which we believe was the fair market value of the Elastic Networks
business at the time of transfer.

    Under the contribution agreement, both Nortel Networks Corporation and
Nortel Networks Inc. agreed not to compete with us during the period commencing
on May 12, 1999 and ending on May 12, 2002, with respect to the design,
research, development, manufacture and/or sale of products or devices that
communicate or involve communicating by EtherLoop technology. Messrs. Manley and
Reid, members of our board of directors, are executives of Nortel Networks Inc.

    INTELLECTUAL PROPERTY TRANSFER AND LICENSE AGREEMENT.  Under this agreement,
Nortel Networks Corporation transferred to us the rights to software, technical
information and trademarks that we use in our business. Also, Nortel Networks
licensed us the rights to patents, patent applications and other trademarks,
software and technical information that we use in our business. In return, we
granted Nortel Networks a royalty-free, non-exclusive, perpetual, worldwide
license, with a limited right to grant sublicenses, to the licensed
technologies, patent applications, technical information and trademarks, and to
the transferred software, trademarks and technical information. The license
granted back to Nortel Networks also includes a license to any improvements that
we may acquire or make to the transferred and licensed technologies, software
and technical information. We also granted Nortel Networks a license to any
patents that are licensed to, or owned, acquired or issued pursuant to
applications filed by, us during any period that Nortel Networks owns more than
50% of our voting securities. The licenses granted back to Nortel Networks are
subject to its obligation not to compete with us with respect to EtherLoop-based
products prior to May 12, 2002. All of our rights to the intellectual property
licensed and transferred to us by Nortel Networks under this agreement are
subject to certain licenses granted by Nortel Networks to third parties prior to
May 12, 1999.

    Under this agreement, we pay Nortel Networks Corporation three separate
royalties. First, we pay a two and one half percent royalty on the amounts we
receive, after the deduction of some trade losses, transportation charges, taxes
and other duties, from either:

    - our sale or sublicense to third parties of some of our products; or

    - our provision to third parties of engineering, installation, maintenance,
      repair and other services relating to these products.

    Second, we pay a two and one half percent royalty on the amounts we receive,
after the deduction of some trade losses, transportation charges, taxes and
other duties, from either:

    - our sale or license to distributors of certain of our products; or

                                       48
<PAGE>
    - the provision by a distributor to an end user of engineering,
      installation, maintenance, repair and other services relating to such
      products.

    Finally, we pay Nortel Networks Corporation a royalty of five percent on the
amounts we receive, after the deduction of some trade losses, transportation
charges, taxes and other duties, from our sale or license to a sublicensee of
the right either to:

    - make, use, copy, modify and sell certain of our products; or

    - to provide engineering, installation, maintenance, repair and other
      services relating to those products.

    Through June 30, 2000, we have incurred an expense of approximately
$322,000, of which we have paid approximately $112,000 to Nortel Networks under
this agreement. These royalty obligations will end on the closing of this
offering.

    PATENT TRANSFER AND LICENSE AGREEMENT.  Under this agreement, Nortel
Networks Inc. transferred to us all of its rights to U.S. patent number
5,912,895 titled "Information Network Apparatus and Methods Communicating
Information Packets via Telephone Lines," both within and outside the United
States. In exchange, we granted Nortel Networks, subject to its obligations not
to compete with us, an irrevocable, nonexclusive, worldwide license to the
patented technology and any improvements to the patented technology we may
acquire or make. Our license back to Nortel Networks includes a limited right to
grant sublicenses. All of our rights to the transferred patent are subject to
certain licenses granted by Nortel Networks to third parties prior to May 12,
1999.

    DISTRIBUTION AGREEMENT.  Effective September 1, 1998, we entered into a
distribution agreement with Nortel Networks for Nortel Networks to purchase
EtherLoop products from us for distribution to customers. The agreement
terminates on December 31, 2001, but it is renewable by us for an additional
three year period. Also, we pay a commission on some sales generated under the
agreement; however, we have incurred no payment obligations to date. Nortel
Networks has provided significant equipment financing arrangements for the
purchase of our products by two of our customers, Darwin and CAIS. For the first
six months of 2000, we estimate that Nortel Networks provided financing
guarantees for Darwin for $3.6 million of purchases, which represented 24.5% of
our revenues for this period, and direct financing to CAIS for $1.0 million of
purchases of our products, which represented 6.8% of our revenues for this
period. Nortel Networks has offered to provide approximately $5.0 million in
additional financing to CAIS and approximately $4.2 million in financing
guarantees for Darwin for purchases through September 28, 2000. These financing
arrangements will not be available from Nortel Networks for purchases of our
products after the completion of this offering.

    LEASE OBLIGATIONS.  The property we occupy at 6120 Windward Parkway,
Alpharetta, Georgia, is subleased from Nortel Networks on the same terms as the
original lease to Nortel Networks. As a sub-lessor, Nortel Networks is
responsible for payments on the lease if we do not pay. We paid $260,000 under
this lease in 1999 and expect to pay a minimum of $268,000 annually until this
lease expires. Also, Nortel Networks guaranteed our lease of office equipment
and fixtures currently used in another office located in Alpharetta, Georgia.
Nortel Networks' guaranty was for $158,000 of the total lease amount and Nortel
Networks has not been called to make a payment under the guaranty.

    TRANSITION SERVICES.  Since May 12, 1999, we have been provided
administrative services from Nortel Networks in connection with our development
as a stand alone company. In 1999, we accrued $29,000 for the costs of these
services. This agreement is scheduled to terminate on November 12, 2000. In
addition, during 1999, we accrued $120,000 for the cost to reimburse Nortel
Networks for Nortel Networks employees who provided services to us.

    COMPENSATION ARRANGEMENTS.  In fulfillment of compensation arrangements
between Nortel Networks and some of our employees relating to their prior
employment with Nortel Networks, Nortel Networks has

                                       49
<PAGE>
agreed to pay these employees, if they are still working for Elastic Networks at
the time of payment, an aggregate of approximately $13.4 million in cash. Of
this amount, two-thirds will be paid at the time at which Nortel Networks'
ownership of our outstanding common stock falls below 50%, and the remaining
one-third will be paid upon the first anniversary of that date. Upon completion
of this offering, Nortel Networks will own approximately 46% of our outstanding
common stock, and will make a payment of approximately $9.0 million to these
employees; on the first anniversary of that date, Nortel Networks will make a
payment of approximately $4.4 million.

    In connection with such payments, the following of our executive officers
will receive approximately the following amounts: Mr. Guy D. Gill, one of our
directors and our president and chief executive officer--$8.6 million;
Mr. Thomas J. Gallo, our vice president of worldwide sales--$980,000; Mr. Larry
R. Hurtado, our vice president of global operations--$1.4 million; Mr. Phillip
L. Griffith, our vice president of marketing--$1.6 million; and Mr. Kevin D.
Elop, our chief financial officer, secretary and treasurer--$45,000.

    SERIES A PREFERRED STOCK FINANCING.  On May 12, 1999 we sold 3,876,923
shares of series A preferred stock at a purchase price of $3.25 per share. Upon
the closing of this offering, the series A preferred stock will automatically
convert into 5,162,450 shares of common stock. The following beneficial owners
of more than 5% of our common stock, assuming the conversion of all shares of
preferred stock into common stock, acquired beneficial ownership of series A
preferred stock pursuant to the series A redeemable convertible participating
preferred stock purchase agreement.

<TABLE>
<CAPTION>
                                                                 NUMBER OF
                                                                COMMON STOCK
NAME                                        NUMBER OF SHARES    EQUIVALENTS     PURCHASE PRICE
----                                        ----------------   --------------   --------------
<S>                                         <C>                <C>              <C>
Pequot Private Equity Fund, L.P...........     2,075,660         2,763,916        $6,745,895
Pequot Venture Partners, L.P..............       923,076         1,229,154         2,999,997
Pequot Offshore Private Equity Fund,
  Inc.....................................       262,802           349,943           854,106
</TABLE>

Mr. Poch, a member of our board of directors, is a managing director of Pequot
Capital Management, Inc., an affiliate of the Pequot entities that own our
stock, and may have an indirect material interest in the transactions between us
and the Pequot entities.

    PAYMENTS FOR SERVICES.  In 1999 and 2000, Elastic utilized the executive
recruitment services of HireUp, Inc. Mr. Rhattigan, a member of our board of
directors, is a principal of that firm. In consideration for its services, we
paid HireUp $10,942 in 1999 and have paid $74,434 in 2000. In addition, in
exchange for services provided to us, in 1999 we granted Mr. Rhattigan options
to purchase 30,000 shares of our common stock at an exercise price of $2.07 per
share.

INVESTMENT IN EVEREST BROADBAND NETWORKS, INC.

    In the fourth quarter of 1999, we purchased 300,000 shares of series A
preferred stock of Everest Broadband Networks, Inc. for an aggregate price of
$102,000. The Pequot entities, combined, own more than 10% of the voting power
of Everest and more than 5% of our common stock. At the time of the investment,
Pequot's board of directors' designees, Mr. Poch and one other non-employee
director who resigned from the board of directors in June 2000 to become chief
executive officer of Everest, were involved in the decision to invest in
Everest.

SERIES B PREFERRED STOCK FINANCING

    In February 2000, we sold 3,922,463 shares of series B preferred stock at a
purchase price of $5.329 per share. Upon the closing of this offering, the
series B preferred stock will automatically convert into common stock. The
following beneficial owners of more than 5% of our common stock, assuming the
conversion of all shares of preferred stock into common stock, acquired
beneficial ownership of series B

                                       50
<PAGE>
preferred stock pursuant to the series B redeemable convertible participating
preferred stock purchase agreement. These shares convert on a one-for-one basis
into common stock on the closing of this offering.

<TABLE>
<CAPTION>
NAME                                                        NUMBER OF SHARES   PURCHASE PRICE
----                                                        ----------------   --------------
<S>                                                         <C>                <C>
Manufacturers Life Insurance Company (U.S.A.) ............     1,407,394         $7,500,003
Pequot Private Equity Fund, L.P. .........................       541,331          2,884,752
Pequot Offshore Private Equity Fund, Inc. ................        68,539            365,244
</TABLE>

Mr. Poch, a member of our board of directors, is a managing director of Pequot
Capital Management, an affiliate of the Pequot entities that own our stock, and
may be deemed to have an indirect material interest in the transactions between
us and the Pequot entities.

    All of the securities referenced above were sold at prices equal to the fair
market value of the securities, as determined by our board of directors, on the
date of issuance.

BRIDGE LOAN FINANCING

    On August 4, 2000, we issued to each of Nortel Networks Inc. and Pequot
Private Equity Fund II, L.P. a secured promissory note and a warrant to
purchase, at an exercise price of $7.32 per share, 51,230 shares of either:

    - our series B preferred stock at any time prior to the closing of this
      offering; or

    - our common stock upon, or at any time following, the closing of this
      offering.

Each of the notes is for an aggregate principal amount of up to $5.0 million.
The notes are secured by all of our assets, bear interest at the rate of 6% per
year, subject to certain adjustments in the event we default under them, and
mature on the earlier to occur of the closing of this offering or February 1,
2001. On August 4, 2000, we borrowed $2.0 million under each of the notes and on
September 15, 2000 we borrowed an additional $1.0 million under each of the
notes, for a total of $6.0 million. We will use $6.0 million of the net proceeds
from this offering to repay all amounts outstanding under these notes upon their
maturity.

REGISTRATION RIGHTS

    Nortel Networks Inc., Nortel Networks Limited, Pequot Private Equity
Fund II, L.P. and the holders of our series A and series B preferred stock,
which will automatically convert into common stock upon the closing of this
offering, have both incidental, or piggyback, and demand registration rights to
cause us to register their shares of common stock in a public offering after
this offering closes. These registration rights are described in detail in
"Description of Capital Stock-Registration Rights."

                                       51
<PAGE>
                       PRINCIPAL AND SELLING STOCKHOLDERS

    The following table contains information concerning:

    - those persons whom we know own beneficially more than 5% of our
      outstanding common stock;

    - our directors;

    - the Named Executive Officers; and

    - all of our directors and executive officers as a group.

    Unless otherwise indicated in the footnotes below, this information is
provided as of August 31, 2000. The number of shares owned by a person includes
shares of common stock subject to options or warrants held by that person that
are currently exercisable or exercisable within 60 days of August 31, 2000. The
table assumes the conversion of all the outstanding shares of our series A and B
preferred stock into 9,084,913 shares of common stock. If the underwriters'
over-allotment option is exercised in full, 32,462,821 shares of common stock
will be outstanding after the completion of this offering.

    The shares issuable under options or warrants exercisable within 60 days of
August 31, 2000 are treated as if outstanding for computing the percentage
ownership of the person holding these options or warrants but are not treated as
if outstanding for the purposes of computing the percentage ownership of any
other person.

    Except as noted, the business address of the named beneficial owner is c/o
Elastic Networks Inc., 6120 Windward Parkway, Suite 100, Alpharetta, Georgia
30005. Except as noted, each beneficial owner has sole voting and investment
power over the shares shown.

<TABLE>
<CAPTION>
                                         SHARES BENEFICIALLY                    SHARES BENEFICIALLY
                                            OWNED PRIOR TO                          OWNED AFTER
                                               OFFERING             SHARES           OFFERING
                                       ------------------------     BEING      ---------------------
NAME OF BENEFICIAL OWNER                  NUMBER       PERCENT     OFFERED       NUMBER     PERCENT
------------------------               -------------   --------   ----------   ----------   --------
<S>                                    <C>             <C>        <C>          <C>          <C>
Guy D. Gill..........................     454,818(1)      1.8%        --          454,818      1.4%
Phillip L. Griffith..................      90,963(2)     *            --           90,963     *
Larry R. Hurtado.....................     136,445(3)     *            --          136,445     *
Steven J. Benson.....................       --           *            --           --         *
Charles G. Betty.....................       --           *            --           --         *
Thomas M. Manley.....................  15,435,845(4)     62.7         --       14,435,845     46.0
Gerald A. Poch.......................   5,004,113(5)     20.3         --        5,004,113     15.9
Richard G. Reid......................  15,435,845(6)     62.7         --       14,435,845     46.0
Jerome L. Rhattigan..................       --           *            --           --         *
Nortel Networks entities.............  15,435,845(7)     62.7      1,000,000   14,435,845     46.0
Pequot Capital Management, Inc.......   5,004,113(8)     20.3         --        5,004,113     15.9
Manufacturers Life Insurance
  Company............................   1,407,394(9)      5.7         --        1,407,394      4.5
All directors and executive officers
  as a group (11 persons)............     21,303,909     83.6         --       21,303,909     62.9
</TABLE>

------------------------------

*   Represents beneficial ownership of less than 1% of our outstanding capital
    stock.

(1) Consists of 454,818 shares subject to options that are exercisable within
    60 days of August 31, 2000.

(2) Consists of 90,963 shares subject to options that are exercisable within
    60 days of August 31, 2000.

(3) Consists of 136,445 shares subject to options that are exercisable within
    60 days of August 31, 2000.

(4) Mr. Manley is the vice president, finance of Nortel Networks' service
    provider and carrier division and may be deemed to beneficially own the
    15,435,845 shares held by the Nortel Networks entities. Nortel Networks
    Limited is selling 1,000,000 of its shares in this offering. Mr. Manley
    disclaims beneficial ownership of these shares, except to the extent of his
    pecuniary interest.

                                       52
<PAGE>
(5) Mr. Poch is a managing director of Pequot Capital Management, Inc. and may
    be deemed to beneficially own the 5,004,113 shares held by the Pequot
    entities. Mr. Poch disclaims beneficial ownership of these shares, except to
    the extent of his pecuniary interest.

(6) Mr. Reid is president of Nortel Networks' global carrier solutions division,
    and may be deemed to beneficially own the 15,435,845 shares held by the
    Nortel Networks entities. Nortel Networks Limited is selling 1,000,000
    shares in this offering. Mr. Reid disclaims beneficial ownership of these
    shares, except to the extent of his pecuniary interest.

(7) Consists of 6,435,845 shares of our common stock owned by Nortel Networks
    Inc. and 8,948,770 shares of common stock, together with 51,230 shares of
    our capital stock issuable upon exercise of a warrant, owned by Nortel
    Networks Limited. We operated as a division of Nortel Networks Inc. from
    September 1997 until May 1999. As a result of a contribution agreement among
    Nortel Networks Inc., its indirect parent company Nortel Networks
    Corporation and us, we began doing business as a separate entity on May 12,
    1999. Mr. Thomas Manley and Mr. Richard Reid, executives of Nortel Networks
    Inc. are members of our board of directors. Nortel Networks Inc.'s business
    address is 2350 Lakeside Blvd., Mail Stop 07/J01/A30, Richardson, Texas
    75082. Nortel Networks Limited's business address is 8200 Dixie Road,
    Brampton, Ontario, Canada L6T 5P6.

(8) Represents 3,305,247 shares held by Pequot Private Equity Fund, L.P.,
    418,482 shares held by Pequot Offshore Private Equity Fund, Inc., 1,229,154
    shares held by Pequot Venture Partners, L.P. and 51,230 shares held by
    Pequot Private Equity Fund II, L.P., issuable upon exercise of a warrant to
    acquire either our series B preferred stock prior to the closing of this
    offering or our common stock upon or after the closing of this offering. The
    Pequot entities are managed by Pequot Capital Management, Inc. which has
    voting and dispositive power over all shares held by the Pequot entities.
    Pequot Capital Management, Inc.'s address is 500 Nyala Farm Road, Westport,
    Connecticut 06880.

(9) Manufacturers Life Insurance Company's business address is c/o Stephen
    Brackett, MF Private Capital, Inc., 45 Milk Street, Ste. 600, Boston,
    Massachusetts 02109.

                                       53
<PAGE>
                          DESCRIPTION OF CAPITAL STOCK

    Upon the closing of this offering, our authorized capital stock will consist
of:

    - 100 million shares of common stock, $0.01 par value per share; and

    - 25 million shares of preferred stock, $0.01 par value per share.

    As of August 31, 2000, 24,492,821 shares of common stock were outstanding,
assuming conversion of all outstanding preferred stock into common stock, and we
had 27 stockholders of record. The following summary describes our capital stock
in all material respects.

COMMON STOCK

    Under the Delaware General Corporation Law, referred to as the DGCL, and our
second amended and restated certificate of incorporation, holders of common
stock are entitled to one vote per share on all matters submitted to a vote of
the stockholders, including the election of directors. The common stock carries
no preemptive rights and is not convertible, redeemable or assessable. The
holders of common stock are entitled to dividends in amounts and at times as may
be declared by the board of directors out of funds legally available therefor.
Upon our liquidation, dissolution or winding up, the holders of our common stock
are entitled to ratably receive our net assets available after payment or
provision for payment of all debts and other liabilities and subject to prior
rights of holders of our preferred stock then outstanding, if any. All shares of
common stock outstanding immediately following this offering will be fully paid
and non-assessable.

PREFERRED STOCK

    Upon the closing of this offering, our second amended and restated
certificate of incorporation will authorize our board of directors to issue up
to 25 million shares of blank check preferred stock. The board of directors will
also have the right to fix or alter the designations, preferences, rights and
any qualifications, limitations, or restrictions of any preferred stock issues,
including dividend rights and rates, conversion rights, voting rights, terms of
redemption, including sinking fund provisions, liquidation preferences and the
number of shares constituting any series or designations of that series.

REGISTRATION RIGHTS

    Under the terms of our investor rights agreement with Nortel Networks Inc.,
Nortel Networks Limited, Pequot Private Equity Fund II, L.P. and the holders of
our series A and B preferred stock, which will be automatically converted to
common stock upon the closing of this offering, these parties holding an
aggregate of 24,571,988 shares of capital stock, which number includes 102,460
shares issuable upon exercise of warrants which will have registration rights
upon issuance, will be entitled to registration rights under the Securities Act.
Following the closing of this offering, Nortel or holders of at least 20% of the
shares entitled to registration rights may require us, on up to two occasions,
to register their shares of common stock for public resale. We initially will be
obligated to register this stock only if the aggregate public offering price
would be at least $5,000,000 and only after six months have passed since our
last public offering. Further, holders of registrable securities may require
that we register their shares for public resale on Form S-3 if the value of the
securities to be registered would be at least $2,000,000. In the event our board
of directors determines it advisable to do so, as limited by the terms of the
investor rights agreement, we may defer any registration for up to 90 days.

    If, after the closing of this offering, we elect to register any of our
shares of common stock for the purpose of effecting any additional public
offerings, the holders of the registrable securities described above would be
entitled to include their shares of common stock in that registration. We may
reduce the number of shares requesting registration in view of adverse market
conditions. Although these registration rights do not apply to this offering, we
are registering for sale 1,000,000 shares owned by Nortel Networks Limited. See
"Principal and Selling Stockholders." All registration rights will terminate
five years following the closing of this offering.

                                       54
<PAGE>
WARRANTS

    As of August 31, 2000 the following warrants were outstanding:

    - one warrant to purchase 12,439 shares of our common stock at an exercise
      price of $2.76 per share; and

    - two warrants to purchase, at an exercise price of $7.32 per share, 102,460
      shares of either (i) prior to the closing of this offering, our series B
      preferred stock, or (ii) upon or following the closing of this offering,
      our common stock.

BUSINESS COMBINATION PROVISIONS

    We will be subject to the "business combination" statute of the DGCL. This
statute prohibits a publicly-held Delaware corporation from engaging in a
"business combination" with an "interested stockholder" for a period of three
years from the date of the transaction in which the person became an interested
stockholder, unless the business combination is approved in a prescribed manner,
such as the approval of a majority of disinterested members of the board. The
term "business combination" includes mergers and stock and asset sales. An
"interested stockholder" is a person who, together with his affiliates and
associates, owns, or within the prior three years owned, 15% or more of the
corporation's voting stock. The effect of this statute could, among other
things, make it more difficult for a third party to gain control of us,
discourage bids for our common stock at a premium or otherwise harm the market
price of our common stock.

LIMITATION OF DIRECTORS' AND OFFICERS' LIABILITY; INDEMNIFICATION

    Our second amended and restated certificate of incorporation and amended and
restated bylaws will include provisions that limit the personal liability of our
officers and directors for monetary damages for breach of their fiduciary duty,
except for liability that cannot be eliminated under the DGCL. Our second
amended and restated certificate of incorporation will provide that, to the
fullest extent provided by the DGCL, our directors will not be personally liable
for monetary damages for breach of their fiduciary duty as directors. The DGCL
does not permit a provision in a corporation's certificate of incorporation that
would eliminate such liability for any of the following reasons:

    - any breach of a duty of loyalty to the corporation or its stockholders;

    - any acts or omissions not in good faith or that involve intentional
      misconduct or a knowing violation of law;

    - any unlawful payment of a dividend or unlawful stock repurchase or
      redemption as provided in Section 174 of the DGCL; or

    - any transaction from which the director derived an improper personal
      benefit.

    While these provisions provide directors with protection from awards for
monetary damages for breaches of their duty of care, they do not eliminate this
duty. These provisions will have no effect on the availability of equitable
remedies such as an injunction or rescission based on a director's breach of his
or her duty of care. The provisions described above apply to an officer of a
corporation only if he or she is a director of that corporation and is acting in
his or her capacity as director, and do not apply to the officers of a
corporation who are not directors.

    Our second amended and restated certificate of incorporation and amended and
restated bylaws will provide that, to the fullest extent permitted by the DGCL,
we may indemnify our directors and officers. In addition, we anticipate that
each director will enter into an indemnification agreement pursuant to which we
will agree to indemnify such director to the fullest extent permitted by the
DGCL. At present, there is no pending litigation or proceeding involving any of
our directors or officers in which indemnification is required or permitted, and
we are not aware of any threatened litigation or proceeding that may result in a
claim for such indemnification.

TRANSFER AGENT AND REGISTRAR

    American Stock Transfer & Trust Company is our transfer agent and registrar.

                                       55
<PAGE>
                        SHARES ELIGIBLE FOR FUTURE SALE

    Sales of a substantial number of shares of our common stock in the public
market following this offering could adversely affect market prices prevailing
from time to time. Furthermore, sales of substantial amounts of common stock in
the public market after various resale restrictions lapse could adversely affect
the prevailing market price and our ability to raise equity capital in the
future.

    After this offering, 31,292,821 shares of our common stock will be
outstanding, assuming that the underwriters do not exercise the over-allotment
option. Of these shares, all of the 7,800,000 shares sold in this offering will
be freely tradable without restriction or further registration under the
Securities Act, unless these shares are purchased by affiliates as that term is
defined in Rule 144 under the Securities Act. The remaining 23,492,821 shares of
common stock held by existing stockholders are restricted securities within the
meaning of Rule 144 under the Securities Act. Restricted securities may be sold
in the public market only if registered or if they qualify for an exemption from
registration under Rules 144 or 701 under the Securities Act, which are
summarized below.

    The following table indicates approximately when the 23,492,821 shares of
our common stock that are not being sold in this offering but which will be
outstanding when this offering is complete will be eligible for sale in the
public market:

<TABLE>
<CAPTION>
                                                           ELIGIBILITY OF RESTRICTED
                                                            SHARES FOR SALE IN THE
                                                                 PUBLIC MARKET
                                                           -------------------------
<S>                                                        <C>
At effective date........................................                   0
90 days after the effective date.........................          18,954,973
180 days after the effective date........................          22,877,436
</TABLE>

    The remaining 615,385 shares will be eligible for sale on June 20, 2001.
These eligibility dates do not take into consideration any restricted periods
under the underwriters' lock-up agreements or any other agreements entered into
by our stockholders. Most of the restricted shares that will become available
for sale in the public market starting 90 days and also 180 days after the
effective date will be subject to volume and other resale restrictions under
Rule 144 because the holders are our affiliates.

RULE 144

    In general, under Rule 144 as currently in effect, beginning 90 days after
the date of this prospectus, a person who has beneficially owned shares of our
common stock for at least one year, including any affiliate of ours, is entitled
to sell, within any three-month period, a number of shares that is not more than
the greater of:

    - 1% of the number of shares of common stock then outstanding, which will
      equal approximately 312,928 shares immediately after this offering; or

    - the average weekly trading volume of our common stock on the Nasdaq
      National Market during the four calendar weeks before a notice of the sale
      on Form 144 is filed.

    Sales under Rule 144 are also subject to manner of sale provisions and
notice requirements and to the availability of current public information about
us.

RULE 144(K)

    Under Rule 144(k), a person who is not deemed to have been one of our
affiliates at any time during the 90 days before a sale, and who has
beneficially owned the restricted shares for at least two years, including the
holding period of any prior owner other than an affiliate, is entitled to sell
the shares without complying with the manner of sale, public information, volume
limitation or notice provisions of Rule 144.

RULE 701

    In general, under Rule 701, any of our employees, directors, officers,
consultants or advisors who purchase shares from us under a stock option plan or
other written agreement can resell those shares 90 days after the effective date
of this offering in reliance on Rule 144, without having to comply with some of
the restrictions, including the holding period, contained in Rule 144.

                                       56
<PAGE>
                                  UNDERWRITING

    Subject to the terms and conditions contained in an underwriting agreement
dated September 28, 2000, the underwriters named below, through their
representatives, Chase Securities Inc., FleetBoston Robertson Stephens Inc. and
UBS Warburg LLC, have severally agreed to purchase from us the respective number
of shares of common stock set forth opposite their names below:

<TABLE>
<CAPTION>
                                                              NUMBER OF
                        UNDERWRITERS                            SHARES
                        ------------                          ----------
<S>                                                           <C>
Chase Securities Inc........................................  2,835,000
FleetBoston Robertson Stephens Inc..........................  1,890,000
UBS Warburg LLC.............................................  1,575,000
CIBC World Markets Corp.....................................    150,000
Dain Rauscher Wessels.......................................    150,000
Deutsche Banc Alex. Brown...................................    150,000
ING Barings LLC.............................................    150,000
Lehman Brothers.............................................    150,000
Salomon Smith Barney Inc....................................    150,000
U.S. Bancorp Piper Jaffray..................................    150,000
Jefferies & Company Inc.....................................     75,000
Kaufman Bros. L.P...........................................     75,000
Raymond James & Associates Inc..............................     75,000
Redwine & Company Inc.......................................     75,000
The Robinson-Humphrey Company, LLC..........................     75,000
Tucker Anthony Cleary Gull..................................     75,000
                                                              ---------
    Total...................................................  7,800,000
                                                              =========
</TABLE>

    The underwriting agreement provides that the obligations of the underwriters
are subject to certain conditions precedent, including the absence of any
material adverse change in our business and the receipt of certain certificates,
opinions and letters from us and the selling stockholder, our counsel, counsel
to the selling stockholder and the independent auditors. The underwriters are
obligated to purchase all shares of common stock offered by us (other than those
shares covered by the over-allotment option described below) if they purchase
any shares.

    The following table shows the per share and total underwriting discounts and
commissions to be paid to the underwriters by us and the selling stockholder.
These amounts are shown assuming both no exercise and full exercise of the
underwriters' over-allotment option to purchase additional shares.

<TABLE>
<CAPTION>
                                                          PAID BY THE SELLING
                         PAID BY ELASTIC NETWORKS             STOCKHOLDER
                        ---------------------------   ---------------------------
                        NO EXERCISE   FULL EXERCISE   NO EXERCISE   FULL EXERCISE
                        -----------   -------------   -----------   -------------
<S>                     <C>           <C>             <C>           <C>
Per Share.............  $     0.91     $     0.91      $   0.91      $     0.91
Total.................   6,188,000      6,720,350       910,000       1,442,350
</TABLE>

    We estimate that the total expenses of this offering, excluding underwriting
discounts and commissions, will be approximately $1.3 million.

    The underwriters propose to offer the shares of common stock directly to the
public at the initial public offering price set forth on the cover page of this
prospectus and to certain dealers at that price less a concession not in excess
of $0.54 per share. The underwriters may allow, and the dealers may reallow, a
concession not in excess of $0.10 per share to some other dealers. After the
initial public offering of the shares, the offering price and other selling
terms may be changed by the underwriters.

    We and the selling stockholder have granted to the underwriters an option,
exercisable no later than 30 days after the date of this prospectus, to purchase
up to 1,170,000 additional shares of common stock at the initial public offering
price, less the underwriting discount set forth on the cover page of this

                                       57
<PAGE>
prospectus. To the extent that the underwriters exercise this option, each of
the underwriters will have a firm commitment to purchase approximately the same
percentage as the number of shares of common stock to be purchased by it shown
in the above table bears to the total number of shares of common stock offered
by this prospectus. If the underwriters exercise the option, we and the selling
stockholder will be obligated, pursuant to the option, to sell shares to the
underwriters to the extent the option is exercised. The underwriters may
exercise this option only to cover over-allotments, if any, made in connection
with the sale of shares of common stock offered by this prospectus.

    The offering of the shares is made for delivery when, as and if accepted by
the underwriters and subject to prior sale and withdrawal, cancellation or
modification of the offering without notice. The underwriters reserve the right
to reject an order for the purchase of shares in whole or in part.

    We and the selling stockholder have agreed to indemnify the underwriters
against certain liabilities, including liabilities under the Securities Act and
to contribute to payments the underwriters may be required to make in respect of
these liabilities.

    Some of our stockholders, who will own in the aggregate 23,253,827 shares of
common stock after the offering, have agreed not to, without the prior written
consent of Chase Securities Inc. or its successors, sell, offer, contract to
sell, transfer the economic risk of ownership in, make any short sale, pledge or
otherwise transfer or dispose of any shares of common stock or any securities
convertible into or exchangeable or exercisable for shares of common stock for a
period of 180 days from the date of this prospectus, subject to some exceptions.
We have agreed that we will not, without the prior written consent of Chase
Securities Inc. or its successors, sell, offer, contract to sell, transfer the
economic risk of ownership in, make any short sale, pledge or otherwise dispose
of any shares of common stock or any securities convertible into or exchangeable
or exercisable for shares of common stock for a period of 180 days following the
date of this prospectus, except that we may issue shares upon the exercise of
options granted prior to the date hereof and may grant additional options under
our stock option plan. Without the prior written consent of Chase
Securities Inc. or its successors, none of these additional options shall be
exercisable during the 180 day period.

    At our request, Chase Securities Inc. is administering a directed share
program for us in which 390,000 shares have been reserved. We will provide Chase
Securities Inc. with a list of names of persons that we would like to ask to
participate in the program. These reserved shares will be sold at the public
offering price that appears on the cover of this prospectus. The number of
shares available for sale to the general public in this offering will be reduced
to the extent reserved shares are purchased by these persons. After reviewing
the prospective list of participants, Chase Securities Inc. will distribute a
letter to the prospective participants asking if those persons would like to
submit indications of interest to participate in the program. These
communications will be accompanied or preceded by a prospectus that meets the
requirements of Section 10 of the Securities Act. If there are indications of
interest by prospective participants to purchase, in the aggregate, more than
the number of shares allocated to the program, then we will determine who can
participate and to what extent. The 180-day "lock-up" agreements referred to
above will bind the directors, executive officers and stockholders that enter
into them with respect to the shares such persons purchase under the program.
The underwriters will offer to the general public, on the same terms as other
shares offered by this prospectus, any reserved shares that are not purchased by
these persons.

    Before this offering, there has been no public market for our common stock.
The initial public offering price for the common stock will be determined by
negotiation among us, the selling stockholder and the representatives of the
underwriters. Among the factors to be considered in determining the initial
public offering price are prevailing market and economic conditions, our
revenues and operating results, market valuations of other companies engaged in
activities similar to ours, estimates of our business potential and our
prospects, and the present state of our business operations, management and
other factors deemed relevant.

                                       58
<PAGE>
    Our shares of common stock have been approved for quotation on the Nasdaq
National Market under the symbol ELAS.

    Persons participating in this offering may over-allot or effect transactions
which stabilize, maintain or otherwise affect the market price of the common
stock at levels above those which might otherwise prevail in the open market,
including by entering stabilizing bids, effecting syndicate covering
transactions or imposing penalty bids. A stabilizing bid means the placing of
any bid or effecting of any purchase, for the purpose of pegging, fixing or
maintaining the price of the common stock. A syndicate covering transaction
means the placing of any bid on behalf of the underwriting syndicate or the
effecting of any purchase to reduce a short position created in connection with
the offering. A penalty bid means an arrangement that permits the underwriters
to reclaim a selling concession from a syndicate member in connection with the
offering when shares of common stock sold by the syndicate member are purchased
in syndicate covering transactions. Such transactions may be effected on the
Nasdaq National Market, in the over-the-counter market or otherwise. This
stabilizing, if commenced, may be discontinued at any time.

    The underwriters may create a syndicate short position by making short sales
of the shares and may purchase the shares on the open market to cover syndicate
short positions created by short sales. Short sales involve the sale by the
underwriters of a greater number of shares than they are required to purchase in
the offering. Short sales can be either covered or naked. Covered short sales
are sales made in an amount not greater than the underwriters' over-allotment
option to purchase additional shares from us in the offering. Naked short sales
are sales in excess of the over-allotment option. A naked short position is more
likely to be created if the underwriters are concerned that there may be
downward pressure on the price of the shares in the open market after pricing
that could adversely affect investors who purchase in the offering. If the
underwriters create a syndicate short position, they may choose to reduce or
cover this position by either exercising the over-allotment option or by
engaging in syndicate covering transactions. The underwriters may close out any
covered short position by either exercising their over-allotment option or
purchasing shares in the open market. The underwriters must close out any naked
short position by purchasing shares in the open market. In determining the
source of shares to close out the covered short position, the underwriters will
consider, among other things, the price of shares available for purchase in the
open market as compared to the price at which they may purchase shares through
the over-allotment option.

    In connection with this offering, certain underwriters, and selling group
members, if any, who are qualified market makers on the Nasdaq National Market,
may engage in passive market making transactions in the common stock on the
Nasdaq national market in accordance with Rule 103 of Regulation M under the
Securities Exchange Act of 1934, as amended. In general, a passive market maker
must display its bid at a price not in excess of the highest independent bid of
such security. If all independent bids are lowered below the passive market
maker's bid, however, such bid must then be lowered when certain purchase limits
are exceeded.

    One or more members of the underwriting selling group may make copies of the
preliminary prospectus available over the Internet to customers through its or
their Websites. The representatives expect that they may allocate a limited
number of shares to such member or members of the selling group for sale to
brokerage account holders.

    There are restrictions on the offer and sale of the common stock in the
United Kingdom. All applicable provisions of the Financial Services Act 1986 and
the Public Offers of Securities Regulations 1995 with respect to anything done
by any person in relation to the common stock in, from or otherwise involving
the United Kingdom must be complied with.

    Each underwriter has agreed that it has;

    - complied and will comply with all applicable provisions of the Financial
      Services Act 1986 with respect to anything done by it in relation to the
      shares of common stock in, from or otherwise involving the United Kingdom;

                                       59
<PAGE>
    - only issued or passed on and will only issue or pass on in the United
      Kingdom any document received by it in connection with the offer or sale
      of the shares of common stock to a person who is of a kind described in
      Article 11(3) of the Financial Services Act 1986 (Investment
      Advertisements) (Exemptions) Order 1996, as amended, or is a person to
      whom such document may otherwise lawfully be issued or passed on; and

    - not offered or sold and prior to the date six months after the date of
      issue of the shares of common stock will not offer or sell any shares of
      common stock to persons in the United Kingdom, except to persons whose
      ordinary activities involve them in acquiring, holding, managing or
      disposing of investments (as principal or agent) for the purposes of their
      businesses or otherwise in circumstances which have not resulted and will
      not result in an offer to the public in the United Kingdom within the
      meaning of the Public Offers of Securities Regulations 1995 or otherwise
      in compliance with all applicable provisions of such regulations.

                                       60
<PAGE>
                                 LEGAL MATTERS

    Hunton & Williams, Atlanta, Georgia, will pass upon the validity of the
shares of common stock offered hereby. Certain legal matters in connection with
the offering will be passed upon for the underwriters by Jones, Day, Reavis &
Pogue, Atlanta, Georgia.

                                    EXPERTS

    The financial statements as of December 31, 1998 and 1999, and for each of
the three years in the period ended December 31, 1999, included in this
prospectus have been audited by Deloitte & Touche LLP, independent auditors, as
stated in their report appearing herein, and have been so included in reliance
upon the report of such firm given upon their authority as experts in accounting
and auditing.

                             ADDITIONAL INFORMATION

    We have filed a registration statement on Form S-1 under the Securities Act
with the SEC, with respect to the common stock offered hereby. As permitted by
the rules and regulations of the SEC, this prospectus, which is a part of the
registration statement, omits certain information, exhibits, schedules and
undertakings set forth in the registration statement. For further information
pertaining to us and the common stock we are offering by this prospectus, please
refer to the registration statement and its exhibits and schedules. Statements
contained in this prospectus as to the contents or provisions of any contract or
other document referred to herein are complete in all material respects. In each
instance reference is made to the copy of such contract or other document filed
as an exhibit to the registration statement. A copy of the registration
statement may be inspected without charge at the public reference facilities of
the SEC at 450 Fifth Street, N.W., Washington, D.C. 20549, and at the SEC's
regional offices located at the Northwestern Atrium Center, 500 West Madison
Street, Suite 1400, Chicago, Illinois 60661 and Seven World Trade Center, 13th
Floor, New York, New York 10048. You may obtain copies of all or any part of the
registration statement from any of these offices upon the payment of the fees
prescribed by the SEC. You may obtain information on the operations of the
public reference room by calling the SEC at 1-800-SEC-0330. In addition,
registration statements and certain other filings made with the SEC through its
Electronic Data Gathering, Analysis, and Retrieval, or EDGAR, system are
publicly available through the Commission's web site at http://www.sec.gov.

                                       61
<PAGE>
                             ELASTIC NETWORKS INC.
                         INDEX TO FINANCIAL STATEMENTS

<TABLE>
<CAPTION>
                                                                PAGE
                                                              --------
<S>                                                           <C>
Independent Auditors' Report................................    F-2

Balance Sheets..............................................    F-3

Statements of Operations....................................    F-4

Statement of Stockholders' Equity (Deficit).................    F-5

Statements of Cash Flows....................................    F-6

Notes to Financial Statements...............................    F-7
</TABLE>

                                      F-1
<PAGE>
                          INDEPENDENT AUDITORS' REPORT

To the Board of Directors and Stockholders of
Elastic Networks Inc.:

    We have audited the accompanying balance sheets of Elastic Networks Inc.
(the "Company") as of December 31, 1998 and 1999, and the related statements of
operations, stockholders' equity (deficit), and cash flows for each of the three
years in the period ended December 31, 1999. These financial statements are the
responsibility of the Company's management. Our responsibility is to express an
opinion on these financial statements based on our audits.

    We conducted our audits in accordance with auditing standards generally
accepted in the United States of America. Those standards require that we plan
and perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. An audit also includes assessing the accounting principles used and
significant estimates made by management, as well as evaluating the overall
financial statement presentation. We believe that our audits provide a
reasonable basis for our opinion.

    In our opinion, such financial statements present fairly, in all material
respects, the financial position of the Company as of December 31, 1998 and
1999, and the results of its operations and its cash flows for each of the three
years in the period ended December 31, 1999 in conformity with accounting
principles generally accepted in the United States of America.

    As discussed in Note 17, the accompanying financial statements have been
restated.

/s/ Deloitte & Touche LLP

Atlanta, Georgia
June 16, 2000
(August 4, 2000 as to Note 15 and August 25, 2000 as to Note 17)

                                      F-2
<PAGE>
                             ELASTIC NETWORKS INC.
                                 BALANCE SHEETS
                       (IN THOUSANDS, EXCEPT SHARE DATA)

<TABLE>
<CAPTION>
                                                                                                         JUNE 30, 2000
                                                      DECEMBER 31,    DECEMBER 31,      JUNE 30,           PRO FORMA
                                                          1998            1999            2000        STOCKHOLDERS' EQUITY
                                                      -------------   -------------   -------------   --------------------
                                                                      (AS RESTATED,    (UNAUDITED)        (UNAUDITED)
                                                                      SEE NOTE 17)    (AS RESTATED,         (NOTE 2)
                                                                                      SEE NOTE 17)
<S>                                                   <C>             <C>             <C>             <C>
ASSETS
Current assets:
  Cash and cash equivalents........................     $     --        $  3,863        $  3,647
  Short-term investments...........................                        1,750             871
  Accounts receivable, net of allowance for
    doubtful accounts of $0, $250, and $250........           40             361           4,441
  Accounts receivable from Nortel Networks.........                        1,209           2,059
  Inventories......................................          528             759           6,222
  Other............................................                           97              78
                                                        --------        --------        --------

      Total current assets.........................          568           8,039          17,318
Property and equipment, net........................        1,167           1,352           2,778
Other..............................................                          102             102
                                                        --------        --------        --------
      Total assets.................................     $  1,735        $  9,493        $ 20,198
                                                        ========        ========        ========

LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT)
Current liabilities:
  Accounts payable.................................     $  1,468        $  6,869        $  7,246
  Payable to Nortel Networks.......................                          149             149
  Royalties payable Nortel Networks................                          129             210
  Accrued liabilities..............................        1,405           1,888           1,792
  Deferred software license revenue, current.......          650             591             571
  Capital lease obligation, current................                           45             161
                                                        --------        --------        --------
    Total current liabilities......................        3,523           9,671          10,129

Capital lease obligation, long term................                          100             304
Deferred software license revenue, net of current
  portion..........................................        1,733           1,142             857

Commitments and contingencies......................

Redeemable convertible participating preferred
  stock Series A, $0.01 par value, 3,876,923 shares
  authorized and outstanding, at cost (redemption
  value $12,600) less note receivable of $1,397 and
  $0...............................................                        8,295           9,958            $     --

Redeemable convertible participating preferred
  stock Series B, $0.01 par value, 3,922,463 shares
  authorized and outstanding, at cost (redemption
  value $20,903)...................................                                       20,903

Stockholders' equity (deficit):
  Common stock, par value $0.01; 35,000,000 shares
    authorized; 1 share issued and outstanding at
    December 31, 1998; 15,385,946 shares issued and
    outstanding as of December 31, 1999; 15,389,122
    shares issued and outstanding as of June 30,
    2000 (unaudited) and 24,474,035 shares issued
    and outstanding pro forma at June 30, 2000.....                          154             154                 245
  Additional paid-in capital.......................                        2,884           6,906              37,676
  Deferred stock compensation......................                         (444)         (3,445)             (3,445)
  Accumulated deficit..............................       (3,521)        (12,309)        (25,568)            (25,568)
                                                        --------        --------        --------            --------
      Total stockholders' equity (deficit).........       (3,521)         (9,715)        (21,953)           $  8,908
                                                        --------        --------        --------            ========
      Total liabilities and stockholders' equity
        (deficit)..................................     $  1,735        $  9,493        $ 20,198
                                                        ========        ========        ========
</TABLE>

    THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THE FINANCIAL STATEMENTS.

                                      F-3
<PAGE>
                             ELASTIC NETWORKS INC.
                            STATEMENTS OF OPERATIONS
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)

<TABLE>
<CAPTION>
                                                                                       SIX MONTHS ENDED
                                             YEAR ENDED DECEMBER 31,                       JUNE 30,
                                    -----------------------------------------      ------------------------
                                      1997          1998            1999             1999           2000
                                    --------      --------      -------------      ---------      ---------
                                                                (AS RESTATED,            (UNAUDITED)
                                                                SEE NOTE 17)            (AS RESTATED,
                                                                                         SEE NOTE 17)
<S>                                 <C>           <C>           <C>                <C>            <C>
Revenues:
  Product revenues................  $    --       $     36         $  4,298         $ 1,070       $ 11,327
  Product revenues from Nortel
    Networks......................                      80            3,267           1,205          3,061
  License revenue.................                     117              650             325            305
                                    -------       --------         --------         -------       --------
        Total revenues............       --            233            8,215           2,600         14,693
Cost of revenues
  Cost of product revenues........                     740            8,118           2,606         11,137
  Cost of product revenues Nortel
    Networks......................                   1,406            6,172           2,903          2,994
                                    -------       --------         --------         -------       --------
        Total cost of revenues....       --          2,146           14,290           5,509         14,131
Gross profit (loss)...............       --         (1,913)          (6,075)         (2,909)           562
Operating expenses:
  Sales and marketing (includes
    stock compensation expense of
    $0, $0, $25, $5, and $104)....      644          3,431            5,194           1,839          6,186
  Research and development
    (includes stock compensation
    expense of $0, $0, $76, $49,
    and $672).....................    3,335          8,191            7,462           3,365          5,429
  General and administrative
    (includes stock compensation
    expense of $0, $0, $10, $2,
    and $41)......................      524          1,695            2,174             683          2,259
                                    -------       --------         --------         -------       --------
        Total operating
          expenses................    4,503         13,317           14,830           5,887         13,874
                                    -------       --------         --------         -------       --------
          Operating loss..........   (4,503)       (15,230)         (20,905)         (8,796)       (13,312)
Other income (expense), net.......                                      174              36             53
                                    -------       --------         --------         -------       --------
        Net loss..................   (4,503)       (15,230)         (20,731)         (8,760)       (13,259)
Accretion of Series A preferred
  stock...........................                                     (333)            (67)          (266)
                                    -------       --------         --------         -------       --------
  Net loss attributable to common
    stockholders..................  $(4,503)      $(15,230)        $(21,064)        $(8,827)      $(13,525)
                                    =======       ========         ========         =======       ========
Basic and diluted net loss per
  common share....................  $ (0.27)      $  (0.91)        $  (1.26)        $ (0.53)      $  (0.81)
                                    =======       ========         ========         =======       ========
Weighted average shares used in
  computing basic and diluted net
  loss per common share...........   16,670         16,670           16,671          16,670         16,675
                                    =======       ========         ========         =======       ========
Pro forma basic and diluted net
  loss per common share
  (unaudited).....................                                 $  (1.03)                      $  (0.58)
                                                                   ========                       ========
Weighted average shares used in
  computing unaudited pro forma
  basic and diluted net loss per
  share amounts (unaudited).......                                   20,548                         23,504
                                                                   ========                       ========
</TABLE>

    THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THE FINANCIAL STATEMENTS.

                                      F-4
<PAGE>
                             ELASTIC NETWORKS INC.

                  STATEMENT OF STOCKHOLDERS' EQUITY (DEFICIT)

                       (IN THOUSANDS, EXCEPT SHARE DATA)

<TABLE>
<CAPTION>
                                     COMMON STOCK                                              ACCUMULATED
                                 ---------------------   ADDITIONAL PAID-IN   DEFERRED STOCK      INCOME      TOTAL STOCKHOLDERS'
                                   SHARES      AMOUNT         CAPITAL          COMPENSATION     (DEFICIT)      EQUITY (DEFICIT)
                                 ----------   --------   ------------------   --------------   ------------   -------------------
<S>                              <C>          <C>        <C>                  <C>              <C>            <C>
BALANCE AT JANUARY 1, 1997.....          --     $ --           $   --            $     --        $     --           $     --

Net loss.......................                                                                    (4,503)            (4,503)
Change in shareholder's net
  investment...................                                                                     3,045              3,045
                                 ----------     ----           ------            --------        --------           --------
BALANCE AT DECEMBER 31, 1997...          --       --               --                  --          (1,458)            (1,458)

Net loss.......................                                                                   (15,230)           (15,230)
Subscription for zero par value
  common stock by Nortel
  Networks.....................           1       --                                                                      --
Change in shareholder's net
  investment...................                                                                    13,167             13,167
                                 ----------     ----           ------            --------        --------           --------
BALANCE AT DECEMBER 31, 1998...           1       --               --                  --          (3,521)            (3,521)

Net loss (as restated, see
  Note 17).....................                                                                   (20,731)           (20,731)
Issuance of common stock to
  Nortel Networks..............  15,384,614      154                                                                     154
Additional paid in capital from
  Series A preferred shares
  issuance (less note
  receivable of $463) (as
  restated)....................                                 2,644                                                  2,644
Change in shareholder's net
  investment...................                                                                    11,943             11,943
Employee stock options
  exercised....................       1,331       --                4                                                      4
Compensation related to
  non-employee stock options
  (as restated)................                                    42                                                     42
Issuance of 12,439 stock
  warrants for consulting
  services (as restated).......                                    14                                                     14
Accretion to redemption value
  on Series A preferred
  stock........................                                  (333)                                                  (333)
Deferred stock compensation (as
  restated)....................                                   513                (513)                                --
Amortization of deferred stock
  compensation (as restated)...                                                        69                                 69
                                 ----------     ----           ------            --------        --------           --------
BALANCE AT DECEMBER 31, 1999
  (AS RESTATED)................  15,385,946      154            2,884                (444)        (12,309)            (9,715)

Net loss (unaudited) (as
  restated)....................                                                                   (13,259)           (13,259)
Accretion to redemption value
  on Series A preferred stock
  (unaudited)..................                                  (266)                                                  (266)
Employee stock options
  exercised (unaudited)........       3,176       --                7                                                      7
Compensation related to
  non-employee stock options
  (unaudited) (as restated)....                                   591                                                    591
Payment of note receivable
  attributable to Series A
  preferred shares issuance
  (unaudited) (as restated)....                                   463                                                    463
Deferred stock compensation
  (unaudited) (as restated)....                                 3,227              (3,227)                                --
Amortization of deferred stock
  compensation (unaudited)
  (as restated)................                                                       226                                226
                                 ----------     ----           ------            --------        --------           --------
BALANCE AT JUNE 30, 2000
  (UNAUDITED) (AS RESTATED)....  15,389,122     $154           $6,906            $ (3,445)       $(25,568)          $(21,953)
                                 ==========     ====           ======            ========        ========           ========
</TABLE>

    THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THE FINANCIAL STATEMENTS.

                                      F-5
<PAGE>
                             ELASTIC NETWORKS INC.
                            STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)

<TABLE>
<CAPTION>
                                                                                                    SIX MONTHS
                                                                  YEAR ENDED DECEMBER 31,         ENDED JUNE 30,
                                                              -------------------------------   -------------------
                                                                1997       1998       1999        1999       2000
                                                              --------   --------   ---------   --------   --------
                                                                                       (AS          (UNAUDITED)
                                                                                    RESTATED,      AS RESTATED,
                                                                                       SEE          SEE NOTE 17
                                                                                    NOTE 17)
<S>                                                           <C>        <C>        <C>         <C>        <C>
Cash flows from operating activities:
  Net loss..................................................  $(4,503)   $(15,230)  $(20,731)   $ (8,760)  $(13,259)
  Adjustments to reconcile net loss to net cash used in
    operating activities:
  Depreciation and amortization.............................        6        114         353         153        314
  Amortization of deferred stock compensation...............                              69          14        226
  Issuance of common stock options and warrants.............                              56          42        591
  Changes in assets and liabilities:
    Decrease (increase) in accounts receivables.............                 (40)       (321)     (2,285)    (4,080)
    Decrease (increase) in accounts receivable from Nortel
      Networks..............................................                          (1,209)       (886)      (850)
    Decrease (increase) in inventories......................                (528)       (231)       (211)    (5,463)
    Decrease (increase) in other............................                             (97)        (18)      (115)
    Increase (decrease) in accounts payable.................    1,100        368       5,401         660        377
    Increase (decrease) in payable to Nortel Networks.......                             149         130
    Increase (decrease) in royalties payable--Nortel
      Networks..............................................                             129                     81
    Increase (decrease) in accrued liabilities..............      380      1,025         483        (150)       (96)
    Increase (decrease) in deferred software license
      revenues..............................................               2,383        (650)       (325)      (305)
    Increase (decrease) in capital lease obligations........                             158                    376
                                                              -------    --------   --------    --------   --------
        Net cash used in operating activities...............   (3,017)   (11,908)    (16,441)    (11,636)   (22,203)
                                                              -------    --------   --------    --------   --------
Cash flows from investing activities:
  Expenditures for plant and equipment......................      (28)    (1,259)       (538)       (334)    (1,740)
  Other.....................................................                            (102)
  Sales of short-term investments...........................                          81,626      36,589     57,544
  Purchases of short-term investments.......................                         (83,376)    (46,855)   (56,665)
                                                              -------    --------   --------    --------   --------
        Net cash used in investing activities...............      (28)    (1,259)     (2,390)    (10,600)      (861)
                                                              -------    --------   --------    --------   --------
Cash flows from financing activities:
  Cash proceeds from issuance of common and preferred
    stock...................................................                          10,760      10,760     20,903
  Proceeds from issuance of common stock upon exercise of
    options.................................................                               4                      7
  Transfers from shareholder................................    3,045     13,167      11,943      11,943
  Payment of note receivable attributable to Series A
    preferred shares issuance...............................                                                  1,994
  Payments of capital lease obligations.....................                             (13)                   (56)
                                                              -------    --------   --------    --------   --------
        Net cash provided by financing activities...........    3,045     13,167      22,694      22,703     22,848
                                                              -------    --------   --------    --------   --------
  Cash and cash equivalents at beginning of period..........       --         --          --          --      3,863
  Net increase (decrease) in cash and cash equivalents......       --         --       3,863         467       (216)
                                                              -------    --------   --------    --------   --------
        Cash and cash equivalents at end of period..........  $    --    $    --    $  3,863    $    467   $  3,647
                                                              =======    ========   ========    ========   ========
Supplemental schedule of investing and financing activities:
  Cash paid during the period for interest..................  $    --    $    --    $      2    $     --   $     10
                                                              =======    ========   ========    ========   ========
  Issuance of stock options and warrants for consulting
    services................................................                        $     52    $     39   $    683
                                                                                    ========    ========   ========
  Capital lease additions...................................                        $    158               $    376
                                                                                    ========               ========
  Redeemable convertible participating preferred stock
    issued for notes receivable, net of discount of
    $134,000................................................                        $  1,860
                                                                                    ========
</TABLE>

    THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THE FINANCIAL STATEMENTS.

                                      F-6
<PAGE>
                             ELASTIC NETWORKS INC.

                    NOTES TO FINANCIAL STATEMENTS--RESTATED

                YEARS ENDED DECEMBER 31, 1997, 1998 AND 1999 AND
              SIX MONTHS ENDED JUNE 30, 1999 AND 2000 (UNAUDITED)

1. BACKGROUND AND BASIS OF PRESENTATION

  BACKGROUND

    On January 1, 1997, Nortel Networks Corporation, and its subsidiary Nortel
Networks Inc., (collectively "Nortel Networks") established the Elastic Networks
group (the "Division") to develop technology and products to provide high speed
access over copper wire infrastructure.

    Nortel Networks created a separate company, Elastic Networks Inc. (the
"Company") that was incorporated on September 22, 1998 and operated as a wholly
owned subsidiary of Nortel Networks. At the close of business on May 12, 1999,
Nortel Networks transferred to the Company certain of the assets and
liabilities, intellectual property rights, licenses and contracts of the
Division of Nortel Networks (the "Separation"). The Division's assets and
liabilities, intellectual property rights, licenses and contracts were
transferred to the Company at their historical cost, which was the carrying
value on the books of Nortel Networks. In exchange, Nortel Networks received
15,384,614 shares of the Company's common stock. At the close of business on
May 12, 1999, the Company sold 3,876,923 shares of its Series A preferred stock
in a private placement for proceeds totaling $12,600,000 (the "Series A Private
Placement").

  BASIS OF PRESENTATION

    These financial statements have been prepared for the purpose of presenting
the balance sheets of the Company as of December 31, 1998 and 1999, and the
related statements of operations, stockholders' equity and cash flows for each
of the three years in the period ended December 31, 1999, and for the six months
ended June 30, 1999 and 2000 (unaudited). Prior to May 12, 1999, the historical
results of operations represent the operations of the Division transferred to
the Company from Nortel Networks in the Separation. These historical results of
the Division present the financial position of the Division as a separate
reporting entity independent of Nortel Networks and its subsidiaries, as if the
Division was a separate entity prior to May 12, 1999.

    The 1997, 1998 and 1999 financial statements have been prepared using the
historical basis of the assets and liabilities and the historical results of
operations related to the Company's business. Changes in stockholders' net
investment in 1997, 1998, and 1999 represent Nortel Networks' contribution of
its net investment after giving effect to the net loss of the Division and net
cash transfers to or from the Division.

    The financial statements, presented here for comparative purposes, include
certain Nortel Networks corporate costs that were allocated to the Division
using procedures deemed appropriate for the nature of the expenses involved. The
procedures utilized various allocation bases such as invested net assets, number
of employees and related payroll costs, and direct effort expended. The
allocated Nortel Networks corporate costs included centralized legal,
accounting, treasury, real estate, information technology, distribution,
customer service, sales, marketing, engineering, and other Nortel Networks
corporate services costs. Such costs were $205,700, $132,800, and $305,000 for
1997, 1998, and the period from January 1, 1999 through May 12, 1999,
respectively. Since the Separation, Nortel Networks has continued to provide
certain corporate services to the Company. From May 12, 1999 to December 31,
1999, fees of $149,002 were charged for such services and were based on Nortel
Networks' internal usage-based fee structures where applicable or Nortel
Networks' direct cost of services, including total compensation and
out-of-pocket expenses. Management believes that the allocations were made on a
reasonable basis, however, the allocations are not necessarily indicative of the
level of expense that would have been

                                      F-7
<PAGE>
                             ELASTIC NETWORKS INC.

              NOTES TO FINANCIAL STATEMENTS--RESTATED (CONTINUED)

                YEARS ENDED DECEMBER 31, 1997, 1998 AND 1999 AND
              SIX MONTHS ENDED JUNE 30, 1999 AND 2000 (UNAUDITED)

1. BACKGROUND AND BASIS OF PRESENTATION (CONTINUED)
incurred had the Company contracted with outside parties. Management did not
make a study or any attempt to obtain quotations from third parties to determine
what the costs of obtaining such services from third parties would have been.

  CASH BALANCES

    Prior to May 12, 1999, the Company, as a division of Nortel Networks,
participated in the Nortel Networks cash management system and, accordingly, did
not maintain cash balances.

2. SIGNIFICANT ACCOUNTING POLICIES

  MANAGEMENT ESTIMATES AND ASSUMPTIONS

    The preparation of financial statements in conformity with accounting
principles generally accepted in the United States of America requires
management to make estimates and assumptions that affect the reported amounts of
assets and liabilities at the date of the financial statements and reported
amounts of revenues and expenses during the reporting period. Actual results
could differ from those estimates.

  UNAUDITED INTERIM FINANCIAL INFORMATION

    The financial statements as of and for the six months ended June 30, 1999
and 2000 are unaudited but, in the opinion of management, include all
adjustments, consisting only of normal recurring accruals necessary for a fair
presentation of its financial position, operating results and cash flows. The
results of operations for the six months ended June 30, 2000 are not necessarily
indicative of results to be expected for the full calendar year 2000 or for any
future period.

  UNAUDITED PRO FORMA STOCKHOLDERS' EQUITY (DEFICIT)

    If the offering contemplated by this prospectus is consummated, all of the
redeemable convertible participating preferred stock outstanding as of the
closing date will automatically be converted into an aggregate of 7,799,386
shares of common stock based on the shares of preferred stock outstanding at
June 30, 2000, and the Series A preferred stockholders will receive in the
aggregate an additional 1,285,527 shares of common stock (see Note 9). Unaudited
pro forma stockholders' equity (deficit) at June 30, 2000, as adjusted for the
conversion of the preferred stock and the issuance of the additional common
shares, is disclosed on the balance sheet.

  CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS

    Cash and cash equivalents consist of cash, money market funds and other
highly liquid investments with an original maturity from date of purchase of
three months or less. The carrying value of these instruments approximates fair
value. The Company generally invests its excess cash in various investment-
grade commercial paper, money market accounts and debt instruments of the U.S.
Treasury, government agencies and corporations with strong credit ratings. Such
investments are made in accordance with the Company's investment policy, which
establishes guidelines relative to diversification and maturities designed to
maintain safety and liquidity. These guidelines are periodically reviewed and
modified to take advantage of trends in yields and interest rates. The Company
has not experienced any losses on its cash

                                      F-8
<PAGE>
                             ELASTIC NETWORKS INC.

              NOTES TO FINANCIAL STATEMENTS--RESTATED (CONTINUED)

                YEARS ENDED DECEMBER 31, 1997, 1998 AND 1999 AND
              SIX MONTHS ENDED JUNE 30, 1999 AND 2000 (UNAUDITED)

2. SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
and cash equivalents. Cash, cash equivalents and short-term investments
consisted of the following (in thousands):

<TABLE>
<CAPTION>
                                                       DECEMBER 31,
                                                    -------------------    JUNE 30,
                                                      1998       1999        2000
                                                    --------   --------   -----------
                                                                          (UNAUDITED)
<S>                                                 <C>        <C>        <C>
Cash equivalents:
  Corporate and other non-government debt
    securities....................................   $--        $  483      $   504
  Money market funds..............................               3,380        3,143
                                                     ------     ------      -------
                                                      --         3,863        3,647
Short-term investments:
  Corporate and other non-government debt
    securities....................................               1,750          871
                                                     ------     ------      -------
                                                     $--        $5,613      $ 4,518
                                                     ======     ======      =======
</TABLE>

    Management determines the appropriate classification of debt securities at
the time of purchase and reevaluates such designation as of each balance sheet
date. Marketable debt securities are classified as available-for-sale, and are
carried at their fair value, with the unrealized gains and losses, when
material, reported net-of-tax as a component of other comprehensive income. As
of December 31, 1999 and June 30, 2000, there were no unrealized gains and
losses. Realized gains and losses and declines in value judged to be
other-than-temporary are included in interest income. The cost of securities
sold is based on specific identification.

  CONCENTRATION OF CREDIT RISK

    Financial instruments that potentially subject the Company to market and
credit risk consist principally of cash and cash equivalents, short-term
investments, notes receivable and accounts receivable. The estimated fair value
of these instruments as of December 31, 1998 and 1999 and June 30, 2000
(unaudited), approximated the carrying amount. The Company has investment
policies that limit the amount of credit exposure to any one issuer and restrict
placement of these investments to issuers evaluated as credit worthy. The
Company maintains its cash and cash equivalents, and short-term investments,
with high quality financial institutions and investment managers. The Company
performs periodic reviews of the credit standing of its investments and the
financial institutions managing those investments.

    The Company performs ongoing credit evaluations of its customers, and
generally does not require collateral from its customers to support accounts
receivable. Requests to extend significant credit to customers are reviewed and
approved by senior management. The Company maintains an allowance for potential
losses due to credit risk, but has not experienced significant write-offs.
Management believes that

                                      F-9
<PAGE>
                             ELASTIC NETWORKS INC.

              NOTES TO FINANCIAL STATEMENTS--RESTATED (CONTINUED)

                YEARS ENDED DECEMBER 31, 1997, 1998 AND 1999 AND
              SIX MONTHS ENDED JUNE 30, 1999 AND 2000 (UNAUDITED)

2. SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
the reserves for losses are adequate. The following table summarizes the changes
in the allowance for doubtful accounts (in thousands):

<TABLE>
<CAPTION>
                                                      DECEMBER 31,             JUNE 30,
                                             ------------------------------   -----------
                                               1997       1998       1999        2000
                                             --------   --------   --------   -----------
                                                                              (UNAUDITED)
<S>                                          <C>        <C>        <C>        <C>
Allowance for doubtful accounts, beginning
  of period................................   $--        $--         $ --         $250
Additional provision.......................                           250           --
                                              ------     ------      ----         ----
Allowance for doubtful accounts, end of
  period...................................   $--        $--         $250         $250
                                              ======     ======      ====         ====
</TABLE>

    The Company had significant accounts receivable balances due from certain
customers as a percentage of total accounts receivable as follows:

<TABLE>
<CAPTION>
                                                        DECEMBER 31,
                                                   ----------------------    JUNE 30,
CUSTOMER                                             1998          1999        2000
--------                                           --------      --------   -----------
                                                                            (UNAUDITED)
<S>                                                <C>           <C>        <C>
Company A........................................   50.0%
Company B........................................    40.0          2.3%
Company C........................................                  77.0        33.2%
Company D........................................                               39.1
Company G........................................                               17.3
</TABLE>

    The following individual customers accounted for 10% or more of total
revenues (amounts in thousands):

<TABLE>
<CAPTION>
                                YEAR ENDED DECEMBER 31,                    SIX MONTHS ENDED JUNE 30,
                       -----------------------------------------   -----------------------------------------
CUSTOMER                      1998                  1999                  1999                  2000
--------               -------------------   -------------------   -------------------   -------------------
                                                                                  (UNAUDITED)
<S>                    <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>
Company C............    $ 80      34.3%      $3,267     39.8%      $1,252     48.3%      $3,158     21.5%
Company D............                          3,394      41.3         665      25.7       6,013      40.9
Company E............                                                                      2,016      13.7
Company F............     117       50.2         650       7.9         325      12.5         305       2.1
</TABLE>

    Currently, the Company relies on a contract manufacturer and some single
source suppliers of materials for certain product components. As a result,
should the Company's current manufacturer or suppliers not produce or deliver
inventory for the Company to sell on a timely basis, operating results could be
adversely impacted.

  INVENTORY

    Inventory is stated at the lower of cost (which approximates first-in,
first-out cost) or market.

                                      F-10
<PAGE>
                             ELASTIC NETWORKS INC.

              NOTES TO FINANCIAL STATEMENTS--RESTATED (CONTINUED)

                YEARS ENDED DECEMBER 31, 1997, 1998 AND 1999 AND
              SIX MONTHS ENDED JUNE 30, 1999 AND 2000 (UNAUDITED)

2. SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
  PROPERTY AND EQUIPMENT

    Property and equipment is stated at cost. Depreciation is calculated using
the straight-line method over the estimated useful lives of the assets. The
expected useful lives of the furniture and fixtures, computer and telecom
equipment and software are three to five years, as are the terms of the facility
lease for leasehold improvements. Maintenance and repairs are charged to
operations as incurred. Expenditures, which substantially increase an asset's
useful life, are capitalized.

  IMPAIRMENT OF LONG-LIVED ASSETS

    The Company assesses potential impairments to its long-lived assets when
there is evidence that events or changes in circumstances have made recovery of
the asset's carrying value unlikely. An impairment loss based on fair value of
the asset is recognized when the sum of the expected future undiscounted net
cash flows is less than the carrying amount of the asset. The Company has
identified no such impairment losses.

  WARRANTY RESERVES

    The Company provides limited warranties on certain of its products for
periods of up to one year. The Company recognizes warranty reserves when
products are shipped based upon an estimate of total warranty costs, and such
reserves are included in current liabilities.

  REVENUE RECOGNITION

    Revenues are recognized when earned in accordance with applicable accounting
standards, including American Institute of Certified Public Accountants
("AICPA") Statement of Position ("SOP") 97-2, SOFTWARE REVENUE RECOGNITION, as
amended. The Company generally recognizes revenues from product sales upon
shipment depending on contract terms and conditions if collectibility is
reasonably assured, product pricing is fixed and determinable and product
returns are reasonably estimated. No revenues are recognized on products shipped
on a trial basis until products are fully accepted by the customer. Estimated
sales returns, based on historical experience by product, are recorded at the
time the product revenues are recognized. Technology license revenues are
recognized ratably over the term of the related agreement.

    Consulting services, principally installation and training revenues, are
recognized as the services are completed. These services are typically performed
under separate service agreements and are usually performed on a time and
material basis. Such services primarily consist of implementation services
related to the installation and deployment of the Company's products and do not
include significant customization or development of the underlying software
code.

  RESEARCH AND DEVELOPMENT COSTS

    Costs incurred for hardware research and development are expensed as
incurred. Costs for the development of new software and substantial enhancements
to existing software are expensed as incurred until technological feasibility
has been established, at which time any additional development costs would be
capitalized in accordance with Statement of Financial Accounting Standards
("SFAS") No. 86, COMPUTER SOFTWARE TO BE SOLD, LEASED, OR OTHERWISE MARKETED.
The Company believes its current process for

                                      F-11
<PAGE>
                             ELASTIC NETWORKS INC.

              NOTES TO FINANCIAL STATEMENTS--RESTATED (CONTINUED)

                YEARS ENDED DECEMBER 31, 1997, 1998 AND 1999 AND
              SIX MONTHS ENDED JUNE 30, 1999 AND 2000 (UNAUDITED)

2. SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
developing software is essentially completed concurrently with the establishment
of technological feasibility; accordingly, no costs have been capitalized to
date.

  STOCK BASED COMPENSATION

    The Company accounts for employee stock plans under the intrinsic value
method prescribed by Accounting Principles Board ("APB") Opinion No. 25,
ACCOUNTING FOR STOCK ISSUED TO EMPLOYEES.

  INCOME TAXES

    The Company uses the asset and liability method to account for income taxes.
Deferred income tax assets and liabilities are recognized for the future tax
consequences attributable to differences between the carrying amounts of
existing assets and liabilities for accounting purposes, and their respective
tax bases. Deferred income tax assets and liabilities are measured using
statutory tax rates expected to apply to taxable income in the years in which
those temporary differences are expected to be recovered or settled. The effect
on deferred income tax assets and liabilities of a change in statutory tax rates
is recognized in net income in the year of change. A valuation allowance is
recorded for those deferred income tax assets whose recoverability is not
reasonably possible.

  NET LOSS PER COMMON SHARE

    Basic and diluted net loss per common share are presented in conformity with
SFAS No. 128, EARNINGS PER SHARE, for all periods presented. Basic and diluted
net loss per common share are computed by dividing the net loss for the period
by the 15,384,615 common shares issued to Nortel; the shares attributable to
employee stock options exercised; and the 1,285,527 additional shares assumed
issued to the Series A preferred stockholders, for all periods presented.
Unaudited pro forma basic and diluted net loss per common share are computed as
described above and also gives effect, under Securities and Exchange Commission
guidance, to the conversion of the Series A and Series B redeemable convertible
participating preferred stock.

    Dilutive securities include options, contingent stock related to Series A
redeemable convertible participating preferred stock, and Series A and B
redeemable convertible participating preferred stock. Potentially dilutive
securities totaling 11,751,027 shares for the year ended December 31, 1999, and
16,563,184 shares for the six month period ended June 30, 2000 (unaudited), were
excluded from historical basic and diluted earnings per share because of their
anti-dilutive effect.

  RECENT PRONOUNCEMENTS

    In March 2000, the Financial Accounting Standards Board ("FASB") issued FASB
Interpretation No. 44, ACCOUNTING FOR CERTAIN TRANSACTIONS INVOLVING STOCK
COMPENSATION (AN INTERPRETATION OF THE ACCOUNTING PRINCIPLES BOARD OPINION
NO. 25) (the "Interpretation"). Among other issues, this Interpretation
clarifies (a) the definition of employee for purposes of applying Opinion 25,
(b) the criteria for determining whether a plan qualifies as a noncompensatory
plan, (c) the accounting consequence of various modifications to the terms of a
previously fixed stock option or award, and (d) the accounting for an exchange
of stock compensation awards in a business combination. This Interpretation
became effective

                                      F-12
<PAGE>
                             ELASTIC NETWORKS INC.

              NOTES TO FINANCIAL STATEMENTS--RESTATED (CONTINUED)

                YEARS ENDED DECEMBER 31, 1997, 1998 AND 1999 AND
              SIX MONTHS ENDED JUNE 30, 1999 AND 2000 (UNAUDITED)

2. SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
July 1, 2000, but certain conclusions in the Interpretation cover specific
events that occur after either December 15, 1998, or January 12, 2000. To the
extent that this Interpretation covers events occurring during the period after
December 15, 1998, or January 12, 2000, but before the effective date of
July 1, 2000, the effects of applying this Interpretation are recognized on a
prospective basis from July 1, 2000. The Company is in the process of evaluating
the effects of this new statement.

    In June 1998, the FASB issued SFAS No. 133, ACCOUNTING FOR DERIVATIVE
INSTRUMENTS AND HEDGING ACTIVITIES, which established accounting and reporting
standards for derivative instruments and hedging activities. It requires an
entity to measure all derivatives at fair value and to recognize them in the
balance sheet as an asset or liability, depending on the entity's rights or
obligations under the applicable derivative contract. In June 1999, the FASB
issued SFAS No. 137, ACCOUNTING FOR DERIVATIVE INSTRUMENTS AND HEDGING
ACTIVITIES DEFERRAL OF THE EFFECTIVE DATE OF FASB STATEMENT NO. 133, which
defers the effective date of SFAS No. 133 until fiscal quarters of all fiscal
years beginning after June 15, 2000. In June 2000, the FASB issued SFAS
No. 138, ACCOUNTING FOR CERTAIN DERIVATIVE INSTRUMENTS AND CERTAIN HEDGING
ACTIVITIES, which amends the accounting and reporting standards of SFAS No. 133
for certain derivative instruments and certain hedging activities. The Company
is in the process of evaluating the effects of these new statements.

    In 1999, Staff Accounting Bulletin ("SAB") No. 101, REVENUE RECOGNITION IN
FINANCIAL STATEMENTS, was issued. The SAB provides guidance on the recognition,
presentation and disclosure of revenue in financial statements filed with the
SEC. Although SAB No. 101 does not change any of the accounting profession's
existing rules on revenue recognition, it draws upon existing rules and explains
how the SEC staff applies those rules, by analogy, to other transactions that
existing rules do not specifically address. SAB No. 101, as amended by SAB
No. 101B, becomes effective for the fourth fiscal quarter of fiscal years
beginning after December 15, 1999. We are in the process of assessing the impact
of SAB No. 101 on our financial statements. However, we do not expect that the
adoption of SAB No. 101 will have a material impact on our financial statements.

3. INVENTORIES

    Inventories consist of the following (in thousands):

<TABLE>
<CAPTION>
                                                      DECEMBER 31,
                                                 -----------------------        JUNE 30,
                                                   1998           1999            2000
                                                 --------       --------       -----------
                                                                               (UNAUDITED)
<S>                                              <C>            <C>            <C>
Raw materials..................................    $390           $146           $   97
Finished goods.................................     138            613            6,125
                                                   ----           ----           ------
    Total......................................    $528           $759           $6,222
                                                   ====           ====           ======
</TABLE>

                                      F-13
<PAGE>
                             ELASTIC NETWORKS INC.

              NOTES TO FINANCIAL STATEMENTS--RESTATED (CONTINUED)

                YEARS ENDED DECEMBER 31, 1997, 1998 AND 1999 AND
              SIX MONTHS ENDED JUNE 30, 1999 AND 2000 (UNAUDITED)

4. PROPERTY AND EQUIPMENT, NET

    Property and equipment, net, consist of the following (in thousands):

<TABLE>
<CAPTION>
                                                      DECEMBER 31,
                                                   -------------------    JUNE 30,
                                                     1998       1999        2000
                                                   --------   --------   -----------
                                                                         (UNAUDITED)
<S>                                                <C>        <C>        <C>
Leasehold improvements...........................   $   57     $   57      $  107
Furniture and fixtures...........................      254        254         302
Computers........................................      258        788       1,750
Other............................................                              86
Test equipment...................................      718        726       1,320
                                                    ------     ------      ------
                                                     1,287      1,825       3,565
Less accumulated depreciation....................     (120)      (473)       (787)
                                                    ------     ------      ------
    Total property and equipment, net............   $1,167     $1,352      $2,778
                                                    ======     ======      ======
</TABLE>

    Depreciation and amortization expense on property and equipment was $5,668,
$113,871 and $352,852 for the years ended December 31, 1997, 1998, and 1999,
respectively and $153,490 and $314,851 for the six month periods ending
June 30, 1999 and 2000 (unaudited), respectively.

5. CAPITAL LEASES

    The Company is obligated for equipment under various capital leases that
expire at various dates through 2002. The related equipment secures these
leases. At December 31, 1998 and 1999, and June 30, 2000 (unaudited), the gross
amount of the equipment acquired under capital leases was $0, $157,879, and
$531,280, respectively, and the related accumulated amortization was $0, $12,402
and $64,695, respectively. Amortization of assets held under capital leases is
included with depreciation and amortization expense in the accompanying
financial statements.

    Future minimum capital lease payments as of December 31, 1999 are as follows
(in thousands):

<TABLE>
<CAPTION>
YEAR ENDING DECEMBER 31,
------------------------
<S>                                                           <C>
2000........................................................    $ 62
2001........................................................      62
2002........................................................      44
                                                                ----
Total minimum lease payments................................     168
Less amount representing interest...........................      23
                                                                ----
    Present value of net minimum capital lease payments.....     145
    Less current installments of obligations under capital
      leases................................................      45
                                                                ----
    Obligations under capital leases, net of current
      installments..........................................    $100
                                                                ====
</TABLE>

                                      F-14
<PAGE>
                             ELASTIC NETWORKS INC.

              NOTES TO FINANCIAL STATEMENTS--RESTATED (CONTINUED)

                YEARS ENDED DECEMBER 31, 1997, 1998 AND 1999 AND
              SIX MONTHS ENDED JUNE 30, 1999 AND 2000 (UNAUDITED)

6. ACCRUED LIABILITIES

    Accrued liabilities consist of the following (in thousands):

<TABLE>
<CAPTION>
                                                      DECEMBER 31,
                                                   -------------------    JUNE 30,
                                                     1998       1999        2000
                                                   --------   --------   -----------
                                                                         (UNAUDITED)
<S>                                                <C>        <C>        <C>
Accrued expenses.................................   $  888     $  151      $  554
Accrued employee benefits........................                 126         318
Warranty hardware................................                 357         466
Incentive bonus accrual..........................      290
Accrued payroll..................................      227        222         280
Known product defects............................                 972         174
Other............................................                  60
                                                    ------     ------      ------
                                                    $1,405     $1,888      $1,792
                                                    ======     ======      ======
</TABLE>

7. COMMITMENTS

    The Company leases administrative and sales offices and certain property and
equipment under noncancellable operating leases expiring through 2004. The
Company subleases some of its administrative and sales office space from Nortel
Networks. The leases contain renewal options and are subject to cost increases.
Total rent expense under such leases for the years ended December 31, 1997, 1998
and 1999 were $0, $111,100 and $343,033, respectively, and for the six month
periods ended June 30, 1999 and 2000 (unaudited) were $171,516 and $328,286,
respectively.

    At December 31, 1999, the future minimum lease payments under operating
leases were as follows (in thousands):

<TABLE>
<CAPTION>
                                                 RELATED PARTY    OTHER
                                                     LEASE        LEASES     TOTAL
                                                 -------------   --------   --------
<S>                                              <C>             <C>        <C>
2000...........................................      $  268       $  488     $  756
2001...........................................         276          558        834
2002...........................................         284          478        762
2003...........................................         218          283        501
2004...........................................                       52         52
                                                     ------       ------     ------
    Total future minimum lease payments........      $1,046       $1,859     $2,905
                                                     ======       ======     ======
</TABLE>

8. INCOME TAXES

    Prior to May 12, 1999, the Company, as a division of Nortel Networks, did
not file separate income tax returns. If the Company had filed separate tax
returns, on a pro forma basis, due to the Company's historical losses, the
Company would not have recorded any tax benefit provisions in its statements of
operations since the future realization of such losses is uncertain. In
addition, all net deferred assets and liabilities, principally net operating
losses, would be fully reserved by a valuation allowance. Since the

                                      F-15
<PAGE>
                             ELASTIC NETWORKS INC.

              NOTES TO FINANCIAL STATEMENTS--RESTATED (CONTINUED)

                YEARS ENDED DECEMBER 31, 1997, 1998 AND 1999 AND
              SIX MONTHS ENDED JUNE 30, 1999 AND 2000 (UNAUDITED)

8. INCOME TAXES (CONTINUED)
Separation, significant components of the Company's recorded net deferred tax
assets and liability as of December 31, 1999 and June 30, 2000 (unaudited) are
shown below (in thousands):

<TABLE>
<CAPTION>
                                                     DECEMBER 31,    JUNE 30,
                                                         1999          2000
                                                     ------------   -----------
                                                                    (UNAUDITED)
<S>                                                  <C>            <C>
Deferred tax assets:
  Deferred software license revenue................    $   658        $   542
  Net operating loss carryforwards.................      4,127          4,969
  Inventory........................................        727            442
  Accrued liabilities..............................        289            377
  Other............................................        412            130
                                                       -------        -------
  Total deferred tax assets........................      6,213          6,460
Valuation allowance................................     (6,110)        (6,438)
                                                       -------        -------
  Net deferred tax assets..........................        103             22
Deferred tax liability:
  Property and equipment...........................       (103)           (22)
                                                       -------        -------
    Total..........................................    $    --        $    --
                                                       =======        =======
</TABLE>

    A valuation allowance equal to 100% of the net deferred tax assets has been
established because of the uncertainty of realization of the deferred tax assets
due to the Company's lack of earnings history. The valuation allowance increased
$6,110,415 and $327,744 for the period from May 12, 1999 to December 31, 1999,
and the six months ended June 30, 2000 (unaudited), respectively. The Company
had federal income tax net operating loss carryforwards at December 31, 1999 of
$10,872,718. The federal income tax loss carryforwards will begin to expire
2020, unless previously utilized.

9. REDEEMABLE CONVERTIBLE PARTICIPATING PREFERRED STOCK

  PREFERRED STOCK

    The Company is authorized to issue up to, and has issued, 7,799,386 shares
of preferred stock in one or more series. Each such series of preferred stock
has such rights, preferences, privileges and restrictions, including voting
rights, dividend rights, conversion rights and liquidation preferences, as set
forth in the Company's certificate of incorporation.

  SERIES A REDEEMABLE CONVERTIBLE PARTICIPATING PREFERRED STOCK

    On May 12, 1999, the Company issued 3,876,923 shares of its Series A
redeemable convertible participating preferred stock for net cash proceeds of
$10,606,153 plus non-interest bearing notes receivable of $1,993,848 (less
discounts on such notes of $134,000). The value of the Series A redeemable
convertible participating preferred stock reflected in the Company's balance
sheet at December 31, 1999 is net of $1,397,000 in notes receivable as
consideration for such shares. As discussed below, the additional

                                      F-16
<PAGE>
                             ELASTIC NETWORKS INC.

              NOTES TO FINANCIAL STATEMENTS--RESTATED (CONTINUED)

                YEARS ENDED DECEMBER 31, 1997, 1998 AND 1999 AND
              SIX MONTHS ENDED JUNE 30, 1999 AND 2000 (UNAUDITED)

9. REDEEMABLE CONVERTIBLE PARTICIPATING PREFERRED STOCK (CONTINUED)
paid-in capital is net of the remaining $463,000 in notes receivable. The notes
were subsequently repaid in June 2000.

  DIVIDENDS

    The Company shall not declare or pay any cash dividends or other
distributions on shares of common stock until the holders of the Series A
preferred stock then outstanding shall have first received, or simultaneously
receive, a cash dividend on each outstanding share of Series A preferred stock
in an amount at least equal to dividends declared, paid, or set aside for common
stock.

  CONVERSION AND RIGHTS

    Each share of Series A preferred stock may be voluntarily converted into
common stock at the option of the stockholder. The Series A preferred stock
automatically converts to common stock upon the closing of the public offering
of shares of the Company's common stock at a price not less than $6.50 per share
and proceeds to the Company of not less than $30,000,000. The Series A preferred
stock has the same voting rights as the common stock. Generally, the Company
cannot issue stock with preferences greater than the current preferred stock or
issue a preferred or common stock dividend without the consent of the holders of
two-thirds of the outstanding shares of the Series A preferred stock.

    Upon a public offering (or immediately prior to any voluntary or involuntary
liquidation, dissolution or winding up of the Company, or the closing or
consummation of any merger or consolidation of the Company into or with another
corporation) the Series A preferred stockholders will receive in the aggregate
an additional 1,285,527 shares of common stock. The Company has considered that
the 1,285,527 common shares were in substance issued at May 12, 1999 because a
portion of the proceeds from the Series A private placement were for these
additional shares, and because of the absolute certainty that the Series A
preferred stockholders will receive these shares. Accordingly, at December 31,
1999, the Series A preferred stock has been valued at $2.44 per share, the
assumed fair market value, and the $3,140,000 difference between the $3.25 price
paid for the preferred shares and the $2.44 per share assumed fair market value,
less notes receivable of $463,000, as consideration for the 1,285,527 common
shares, has been credited to additional paid-in capital. The notes were
subsequently repaid in June 2000.

    If the Company has not consummated a public offering as of December 31,
2000, and for the year ending December 31, 2000, revenues do not equal or exceed
$40,000,000, Series A preferred stockholders shall be entitled to receive in the
aggregate an additional 3,453,697 shares of common stock over and above the
1,285,527 common shares.

    The Company has considered the additional 3,453,697 shares of common stock
to be a beneficial conversion feature of the Series A preferred stock. The value
of such shares is $2.44 per share or $8,427,021 and it will be recorded if and
when the above revenue and public offering contingencies are resolved.

  LIQUIDATION

    In the event of any voluntary or involuntary liquidation, dissolution or
winding up of the Company, or the closing or consummation of any merger or
consolidation of the Company into or with another

                                      F-17
<PAGE>
                             ELASTIC NETWORKS INC.

              NOTES TO FINANCIAL STATEMENTS--RESTATED (CONTINUED)

                YEARS ENDED DECEMBER 31, 1997, 1998 AND 1999 AND
              SIX MONTHS ENDED JUNE 30, 1999 AND 2000 (UNAUDITED)

9. REDEEMABLE CONVERTIBLE PARTICIPATING PREFERRED STOCK (CONTINUED)
corporation, the holders of Series A preferred stock are entitled to receive out
of the assets of the Company available for distribution to its stockholders, an
amount equal to at least their initial investment plus any declared but unpaid
dividends, including all cumulative dividends.

  REDEMPTION

    On May 12, 2004 and on each of the first and second anniversaries thereof,
the Company may redeem, at the request of each holder of shares of Series A
preferred stock then outstanding up to one-third of the originally issued shares
per year. The redemption price shall be at a price equal to the initial
investment of $12,600,000, plus any dividends declared but unpaid thereon,
subject to appropriate adjustment in the event of any stock dividend, stock
split, combination or other similar recapitalization affecting these shares. The
Company is accreting the $3,140,000 difference between cost and redemption value
over the period from issuance to the redemption periods.

  SERIES B REDEEMABLE CONVERTIBLE PARTICIPATING PREFERRED STOCK

    On February 14, 2000, the Company issued 3,922,463 shares of Series B
redeemable convertible participating preferred stock for net cash proceeds of
$20,902,805.

  DIVIDENDS

    The Company shall not declare or pay any cash dividends or other
distributions on shares of common stock until the holders of the Series B
preferred stock then outstanding shall have first received, or simultaneously
receive, a cash dividend on each outstanding share of Series B preferred stock
in an amount at least equal to dividends declared, paid, or set aside for common
stock.

  CONVERSION AND RIGHTS

    Each share of Series B preferred stock may be converted into common stock on
a one-to-one basis at the option of the stockholder. The Series B preferred
stock automatically converts to common stock upon the closing of the public
offering of shares of the Company's common stock at a price not less than $8.00
per share and net proceeds to the Company of not less than $30,000,000. The
Series B preferred stock has the same voting rights as the common stock.
Generally, the Company cannot issue stock with preferences greater than the
current preferred stock or issue a preferred or common stock dividend without
the consent of the holders of two-thirds of the outstanding shares of Series B
preferred stock.

  LIQUIDATION

    In the event of any voluntary or involuntary liquidation, dissolution or
winding up of the Company, or the closing or consummation of any merger or
consolidation of the Company into or with another corporation, the holders of
Series B preferred stock are entitled to receive out of the assets of the
Company available for distribution to its stockholders, an amount equal to at
least $5.329 per share plus any declared but unpaid dividends, including all
cumulative dividends.

                                      F-18
<PAGE>
                             ELASTIC NETWORKS INC.

              NOTES TO FINANCIAL STATEMENTS--RESTATED (CONTINUED)

                YEARS ENDED DECEMBER 31, 1997, 1998 AND 1999 AND
              SIX MONTHS ENDED JUNE 30, 1999 AND 2000 (UNAUDITED)

9. REDEEMABLE CONVERTIBLE PARTICIPATING PREFERRED STOCK (CONTINUED)
  REDEMPTION

    On May 12, 2004 and on each of the first and second anniversaries thereof,
the Company will redeem, at the request of each holder of shares of Series B
preferred stock then outstanding up to one-third of the originally issued shares
per year. The redemption price shall be at a price equal to the initial
investment of $20,902,805 plus any dividends declared but unpaid thereon,
subject to appropriate adjustment in the event of any stock dividend, stock
split, combination or other similar recapitalization affecting these shares.

10. STOCKHOLDERS' EQUITY

  COMMON STOCK

    The Company is authorized to issue 35,000,000 shares of Common Stock $0.01
par value. The holders of common stock are entitled to one vote per share and
are entitled to dividends when and if declared by the Board of Directors of the
Company.

    On May 12, 1999, the Company issued 15,384,614 common shares. During 1999,
two employees exercised options to purchase a total of 1,331 shares. During the
first six months of 2000, two employees exercised options to purchase a total of
3,176 shares. As of December 31, 1999 and June 30, 2000 (unaudited), there were
15,385,946 and 15,389,122 shares, respectively of common stock outstanding.

  COMMON STOCK RESERVED FOR FUTURE ISSUANCE

    Common shares reserved for future issuance consisted of the following:

<TABLE>
<CAPTION>
                                                      DECEMBER 31,
                                                          1999       JUNE 30, 2000
                                                      ------------   --------------
                                                                      (UNAUDITED)
<S>                                                   <C>            <C>
Conversion of convertible preferred stock...........    3,876,923       7,799,386
Shares deemed issued upon sale of Series A preferred
  stock.............................................    1,285,527       1,285,527
Stock warrants......................................       12,439          12,439
Shares reserved for future option exercises.........    5,135,435       5,707,259
Shares reserved for potential issuance under
  provisions of Series A convertible preferred stock
  agreement.........................................    3,453,697       3,453,697
                                                       ----------      ----------
      Total.........................................   13,764,021      18,258,308
                                                       ==========      ==========
</TABLE>

  LIQUIDATION

    Upon the dissolution or liquidation of the Company, whether voluntary or
involuntary, holders of common stock will be entitled to receive all assets of
the Company available for distribution to its stockholders, subject to any
preferential and participation rights of any then outstanding preferred stock.

                                      F-19
<PAGE>
                             ELASTIC NETWORKS INC.

              NOTES TO FINANCIAL STATEMENTS--RESTATED (CONTINUED)

                YEARS ENDED DECEMBER 31, 1997, 1998 AND 1999 AND
              SIX MONTHS ENDED JUNE 30, 1999 AND 2000 (UNAUDITED)

10. STOCKHOLDERS' EQUITY (CONTINUED)
  WARRANTS

    In November 1999, the Company entered into an agreement with a corporate
partner in consideration of the consulting services which the partner has
rendered to the Company in the past and which the partner will continue to
render to the Company in the future. In addition, the Company issued a warrant
to such corporate partner to purchase 12,439 shares of the common stock at a
price of $2.76 per share. One third of the warrant shares vested on the November
1999 effective date of the agreement; one third of the warrant shares vest in
November 2000; and the remaining one third of the warrant shares vest in
November 2001. The warrant is exercisable for five years following the date of
issuance. The estimated fair value of the warrant shares at the time of issuance
was $1.16 per share or $14,429 and was determined using the Black-Scholes
Valuation Model with the following assumptions: no dividend yield; volatility of
62%; risk-free interest rate of 6.3%; an expected life of 5 years; and a fair
value of common stock of $2.20. The warrant is non-forfeitable and was issued
for consulting services received and, if requested, to be received in the
future. The Company will record additional expense as the warrant vests, based
on the related fair value of the underlying stock.

11. STOCK OPTIONS

    On May 12, 1999, the Company introduced the Elastic Networks 1999 Stock
Incentive Plan (the "Plan"), under which options to purchase common shares of
the Company may be granted to employees, officers, and directors of, and
consultants and advisors to, the Company. Options granted may be either
incentive stock options or non-statutory stock options and are exercisable
within the times determined by the Board of Directors as specified in each
option agreement. Options vest over a period of time as determined by the Board
of Directors, generally four years. The Company is authorized to issue 5,711,766
shares under the Plan. A summary of the activity under the Plan is set forth
below:

<TABLE>
<CAPTION>
                                                                     WEIGHTED
                                                                     AVERAGE
                                                         NUMBER OF   EXERCISE
                                                          SHARES      PRICE
                                                         ---------   --------
<S>                                                      <C>         <C>
Balance at December 31, 1998
  Granted..............................................  4,640,877    $2.07
  Exercised............................................    (1,331)     2.07
  Cancelled............................................  (231,578)     2.07
                                                         ---------
Balance at December 31, 1999...........................  4,407,968     2.07
  Granted (unaudited)..................................  1,188,903     3.32
  Exercised (unaudited)................................    (3,176)     2.07
  Cancelled (unaudited)................................  (296,033)     2.18
                                                         ---------
Balance at June 30, 2000 (unaudited)...................  5,297,662     2.59
                                                         =========
</TABLE>

    As of December 31, 1999 there were 358,650 options exercisable at an
exercise price of $2.07. As of June 30, 2000 (unaudited), there were 994,522
options exercisable at an exercise price of $2.07.

                                      F-20
<PAGE>
                             ELASTIC NETWORKS INC.

              NOTES TO FINANCIAL STATEMENTS--RESTATED (CONTINUED)

                YEARS ENDED DECEMBER 31, 1997, 1998 AND 1999 AND
              SIX MONTHS ENDED JUNE 30, 1999 AND 2000 (UNAUDITED)

11. STOCK OPTIONS (CONTINUED)
    The following table summarizes all employee options outstanding and
exercisable by price and range as of December 31, 1999:

<TABLE>
<CAPTION>
                       OPTIONS OUTSTANDING                         OPTIONS EXERCISABLE
  -------------------------------------------------------------   ----------------------
                                          WEIGHTED
                                          AVERAGE      WEIGHTED                 WEIGHTED
                                         REMAINING     AVERAGE                  AVERAGE
        EXERCISE            NUMBER      CONTRACTUAL    EXERCISE     NUMBER      EXERCISE
          PRICE           OUTSTANDING   LIFE (YEARS)    PRICE     EXERCISABLE    PRICE
  ---------------------   -----------   ------------   --------   -----------   --------
  <S>                     <C>           <C>            <C>        <C>           <C>
          $2.07            3,946,920        9.5         $2.07       326,566      $2.07
</TABLE>

    The following table summarizes all employee options outstanding and
exercisable by price as of June 30, 2000 (unaudited):

<TABLE>
<CAPTION>
                       OPTIONS OUTSTANDING                         OPTIONS EXERCISABLE
  -------------------------------------------------------------   ----------------------
                                          WEIGHTED
                                          AVERAGE      WEIGHTED                 WEIGHTED
                                         REMAINING     AVERAGE                  AVERAGE
        EXERCISE            NUMBER      CONTRACTUAL    EXERCISE     NUMBER      EXERCISE
          PRICE           OUTSTANDING   LIFE (YEARS)    PRICE     EXERCISABLE    PRICE
  ---------------------   -----------   ------------   --------   -----------   --------
  <S>                     <C>           <C>            <C>        <C>           <C>
          $2.07            4,282,914          9.0       $2.07       894,195      $2.07
           4.53              519,400          9.9        4.53            --       4.53
           9.30               24,300         10.0        9.30            --       9.30
</TABLE>

    During the year ended December 31, 1999 and the six months ended June 30,
2000 (unaudited), the Company recognized $513,000 and $3,227,000, respectively,
in deferred stock compensation relating to options granted with an exercise
price that was less than the estimated fair market value of the Company's stock
at the grant date.

  STOCK BASED COMPENSATION

    The Company applies APB Opinion No. 25 and related interpretations in
accounting for its employee stock-based compensation plans. Had compensation
costs for the Company's stock-based compensation plans been determined based on
the fair value at the grant date for awards under the Plan, consistent with the
methodology prescribed under SFAS No. 123, ACCOUNTING FOR STOCK-BASED
COMPENSATION, the Company's results would have been as follows for the year
ended December 31, 1999 (in thousands except per share amounts):

<TABLE>
<CAPTION>
                                                               YEAR ENDED
                                                              DECEMBER 31,
                                                                  1999
                                                              ------------
<S>                                                           <C>
Net loss....................................................    $(20,731)
Net loss attributable to common stockholders................     (21,064)
Net loss per common share--basic and diluted................       (1.26)
</TABLE>

                                      F-21
<PAGE>
                             ELASTIC NETWORKS INC.

              NOTES TO FINANCIAL STATEMENTS--RESTATED (CONTINUED)

                YEARS ENDED DECEMBER 31, 1997, 1998 AND 1999 AND
              SIX MONTHS ENDED JUNE 30, 1999 AND 2000 (UNAUDITED)

11. STOCK OPTIONS (CONTINUED)
    The weighted average fair value of all options granted during fiscal 1999
was estimated as of the date of grant using the Black-Scholes option-pricing
model with the following weighted average assumptions.

<TABLE>
<CAPTION>
                                                               YEAR ENDED
                                                              DECEMBER 31,
                                                                  1999
                                                              ------------
<S>                                                           <C>
Expected option life, in years..............................         5
Risk-free interest rate.....................................       6.3%
Volatility..................................................      62.0%
Dividend yield..............................................       0.0%
</TABLE>

    For purposes of pro forma disclosures, the estimated fair value of options
is amortized to expense over the vesting period. The estimated fair value of
employee stock options granted during 1999 was $1.32 per share.

  NONEMPLOYEE STOCK OPTIONS

    During 1999, the Company issued options to purchase 461,048 shares under the
Plan in exchange for services received or to be received. The options have an
exercise price of $2.07 and a fair value of $1.32 per option on the grant date.
The weighted average fair value was determined using the Black-Scholes Valuation
Model with the following assumptions: no dividend yield; volatility of 62%;
risk-free interest rate of 6.3%; and an expected life of 5 years. The majority
of these options will be fully vested by December 31, 2001. In conjunction with
the issuance of these options, the Company recognized expense of $41,735 in 1999
and $591,485 in the six months ended June 30, 2000 (unaudited) based on the fair
value of the options, which have fully or partially vested. Additional expense
will be recorded in subsequent periods based on additional vesting and the
related fair value of the underlying stock.

12. SOFTWARE LICENSE AGREEMENT

    In September 1998, Nortel Networks and a non-affiliate investor (the
"Licensee") signed a Cooperative Development and License Agreement. The
agreement was subsequently assigned by Nortel Networks to the Company. Under the
terms of the agreement, the Licensee agreed to pay $4,500,000 for a license of
certain of the Company's technology and for development of some additional
agreed-upon technology. The payment terms provided for $1,000,000 to be paid
within 30 days of the signing of the agreement and for additional payments to be
made within 30 days of the completion by the Company of certain technology. The
Company received $1,000,000 in October 1998 and $1,500,000 in December 1998 from
the Licensee as payments under this agreement. Such amounts have been reflected
as deferred software license revenue on the Company's December 31, 1998 balance
sheet and will be amortized on a straight-line basis over the remaining term of
the agreement.

    In May 1999, the agreement was amended to provide for the termination of the
original agreement in the event that the Company and the Licensee could not
agree to the final terms and completion dates of the additional technology to be
developed under the term of the original agreement.

    As described in Note 9, in May 1999 the Company issued 615,385 shares of
Series A redeemable convertible participating preferred stock to the Licensee
for cash of $6,154 plus non-interest bearing notes

                                      F-22
<PAGE>
                             ELASTIC NETWORKS INC.

              NOTES TO FINANCIAL STATEMENTS--RESTATED (CONTINUED)

                YEARS ENDED DECEMBER 31, 1997, 1998 AND 1999 AND
              SIX MONTHS ENDED JUNE 30, 1999 AND 2000 (UNAUDITED)

12. SOFTWARE LICENSE AGREEMENT (CONTINUED)
receivable of $1,860,000, net of discounts on such notes of $134,000. Repayment
of the notes is required if the certain technology is completed or upon a
liquidation or qualified initial public offering by the Company. If the
technology is not completed, the Licensee has the option of paying the notes in
full and keeping the shares or canceling the notes and returning the shares.

    The Cooperative Development and License Agreement was amended, effective
April 5, 2000, to provide for the granting of a license by the Company to the
Licensee for certain technology that was developed under the terms of the
agreement. Accordingly, the Licensee has agreed to pay the notes and on
June 16, 2000, the Company received cash of $1,993,848 in full payment of the
notes.

13. SEGMENT INFORMATION

    The Company operates in one reportable business segment, to develop
technology and products to provide high speed access over copper wire
infrastructure.

  GEOGRAPHIC INFORMATION

    The Company's headquarters and its operations are located in the United
States. The Company's research and development activities are conducted in the
United States. The Company conducts its sales, marketing and customer service
activities throughout the world. Geographic long-lived assets information is
based on the physical location of the assets at the end of each period.
Geographic revenue information is based on the location of the end customer.

    Identifiable long-lived assets (principally property and equipment) by
geographic areas (in thousands):

<TABLE>
<CAPTION>
                                                              DECEMBER 31,
                                                           -------------------    JUNE 30,
                                                             1998       1999        2000
                                                           --------   --------   -----------
                                                                                 (UNAUDITED)
<S>                                                        <C>        <C>        <C>
Long-lived assets--United States.........................   $1,167     $1,352      $2,778
</TABLE>

    Revenues by geographic region are as follows (in thousands):

<TABLE>
<CAPTION>
                                                   YEAR ENDED DECEMBER          SIX MONTHS ENDED
                                                           31,                      JUNE 30,
                                              ------------------------------   -------------------
                                                1997       1998       1999       1999       2000
                                              --------   --------   --------   --------   --------
                                                                                   (UNAUDITED)
<S>                                           <C>        <C>        <C>        <C>        <C>
Revenues:
  United States.............................   $   --      $233      $7,267    $ 2,438    $12,468
  Canada....................................                            126         76        747
  Asia......................................                            799         83      1,467
  Other.....................................                             23          3         11
                                               ------      ----      ------    -------    -------
      Total revenues........................   $   --      $233      $8,215    $ 2,600    $14,693
                                               ======      ====      ======    =======    =======
</TABLE>

                                      F-23
<PAGE>
                             ELASTIC NETWORKS INC.

              NOTES TO FINANCIAL STATEMENTS--RESTATED (CONTINUED)

                YEARS ENDED DECEMBER 31, 1997, 1998 AND 1999 AND
              SIX MONTHS ENDED JUNE 30, 1999 AND 2000 (UNAUDITED)

14. ROYALTY OBLIGATIONS

    On May 12, 1999, the Company obtained ownership rights in certain
intellectual property belonging to Nortel Networks. Nortel Networks gave the
Company several exclusive and non-exclusive, worldwide licenses under the
Intellectual Property Transfer and License Agreement (the "Agreement") for the
purpose of designing, developing, using, manufacturing, and distributing
licensed technical information, patents, products, technology, trademarks,
software and third party software. Such license also includes the right to have
licensed products and software made by another manufacturer for the use, lease
or sale by the Company. The patent license granted to the Company also includes
the right to grant sublicenses to third parties within the scope of the license
granted.

    The provisions of the Agreement also provide for the Company to pay to
Nortel Networks: (a) a royalty of 2.5% of net end user revenues for the term of
the Agreement; (b) a royalty of 2.5% of net distributor revenues for the term of
the Agreement; (c) 5.0% of net sublicensing revenues for the term of the
Agreement. The royalty payments are due 30 days after each quarter-end. The
royalty and reporting obligations set out in the Agreement shall be payable by
the Company until such time as securities of the Company are first offered for
sale and sold to the public in a public offering or on a sale of the Company at
a value greater than or equal to $30,000,000; after such time, provided the
Company has paid all outstanding royalties owing and is not in default under any
of the terms of the Agreement, the licenses granted to the Company shall be
considered to be fully paid-up and royalty free. For 1999, royalties owed were
$129,216.

15. SUBSEQUENT EVENTS

    In August 2000, the Company signed agreements to borrow up to $5 million
from Nortel Networks and up to $5 million from an affiliate of one of its
preferred stockholders. Any amounts borrowed under such agreements, if not
repaid sooner, are due February 2001. Borrowings are secured by all of the
Company's assets, bear interest at 6% annually and are mandatorily payable in
the event of the closing of a public offering of shares of the Company's common
stock with net proceeds to the Company of not less than $35 million ("qualified
IPO") or a sale, merger or reorganization of the Company. Any borrowings repaid
or prepaid may not be reborrowed. The Company has borrowed $2 million under each
of the above borrowing agreements.

    Warrants that expire in three years were also issued in connection with the
financing. The warrants may be exercised to acquire 102,460 shares of Series B
preferred stock prior to a qualified IPO or 102,460 shares of common stock
following a qualified IPO, at an exercised price of $7.32 per share. These
warrants, which were fully vested when granted, are valued at approximately
$657,000 using the Black-Scholes Valuation Model with the following assumptions:
no dividend yield; volatility of 62%; risk-free interest rate of 6.3%; and an
expected life of 3 years. The calculated fair value of the warrants will be
amortized to interest expense using the effective interest method.

16. OTHER SUBSEQUENT EVENTS (UNAUDITED)

    In fulfillment of compensation arrangements between Nortel Networks and some
of the Company's employees relating to their prior employment with Nortel
Networks, Nortel Networks has agreed to pay these employees, if they are still
working for the Company at the time of payment, an aggregate of approximately
$13.4 million in cash. Of this amount, two-thirds will be paid at the time at
which Nortel

                                      F-24
<PAGE>
                             ELASTIC NETWORKS INC.

              NOTES TO FINANCIAL STATEMENTS--RESTATED (CONTINUED)

                YEARS ENDED DECEMBER 31, 1997, 1998 AND 1999 AND
              SIX MONTHS ENDED JUNE 30, 1999 AND 2000 (UNAUDITED)

16. OTHER SUBSEQUENT EVENTS (UNAUDITED) (CONTINUED)
Networks' ownership of the Company's outstanding common stock falls below 50%
and the remaining one-third will be paid on the first anniversary of that date.
Upon the completion of the Company's anticipated initial public offering (the
"Offering") Nortel Networks will own approximately 46% of the Company's
outstanding common stock. As such, Nortel Networks will make a payment of
approximately $9.0 million to these employees, and will make a payment of
approximately $4.4 million on the first anniversary of that date. The Company
will record compensation expense of approximately $9.0 million on the completion
of the Offering and approximately $4.4 million over the following twelve months,
and will record capital contributions from Nortel Networks in equivalent
amounts.

    In August 2000, the Company's Board of Directors adopted and approved the
recommendation to the Company's stockholders for their approval of an Amendment
to the Company's Certificate of Incorporation and the Amendment and Restatement
of its Bylaws, each to be effective concurrently with the closing of the
Offering. Among other things, upon closing of the Offering, the Company's
authorized capital stock will consist of 100 million shares of $.01 par value
common stock and 25 million shares of $.01 par value preferred stock.

    In September 2000, the Company borrowed an additional $1.0 million under
each of its borrowing agreements described in Note 15 above.

17. RESTATEMENTS

    Subsequent to the issuance of the Company's 1999 financial statements, the
Company's management determined that the Company had not granted an option to a
non-affiliate investor in connection with its sale of 615,385 shares of
Series A redeemable convertible participating preferred stock as described in
Note 12. Accordingly, the fair value ascribed to the option of $573,918 should
not have been recognized in the Company's financial statements. Associated with
this, the non-interest bearing notes receivable for the Series A redeemable
convertible participating preferred stock of $1,993,848 have been restated to
reflect an inherent discount of approximately $134,000. As a result, other
current assets, Series A redeemable convertible participating preferred stock,
additional paid-in capital and general and administrative expenses have been
restated from amounts previously reported.

    Also, subsequent to the issuance of the Company's 1999 financial statements,
the Company's management revised its estimate of the fair value of its common
stock for purposes of determining stock based compensation for issuances of
warrants and stock options. As a result, deferred stock compensation, additional
paid-in capital, sales and marketing expenses, research and development expenses
and general and administrative expenses have been restated from amounts
previously reported.

                                      F-25
<PAGE>
                             ELASTIC NETWORKS INC.

              NOTES TO FINANCIAL STATEMENTS--RESTATED (CONTINUED)

                YEARS ENDED DECEMBER 31, 1997, 1998 AND 1999 AND
              SIX MONTHS ENDED JUNE 30, 1999 AND 2000 (UNAUDITED)

17. RESTATEMENTS (CONTINUED)
    Significant effects of the restatements are summarized below (in thousands):

<TABLE>
<CAPTION>
                                    DECEMBER 31, 1999         JUNE 30, 1999           JUNE 30, 2000
                                  ---------------------   ---------------------   ---------------------
                                      AS                      AS                      AS
                                  PREVIOUSLY      AS      PREVIOUSLY      AS      PREVIOUSLY      AS
                                   REPORTED    RESTATED    REPORTED    RESTATED    REPORTED    RESTATED
                                  ----------   --------   ----------   --------   ----------   --------
                                                               (UNAUDITED)             (UNAUDITED)
<S>                               <C>          <C>        <C>          <C>        <C>          <C>
At:
  Other current assets..........   $    473    $     97                            $    456    $     78
  Total assets..................      9,869       9,493                              20,576      20,198
  Series A redeemable
    convertible participating
    preferred stock.............      7,965       8,295                              10,059       9,958
  Additional paid in capital....      3,270       2,884                               5,904       6,906
  Deferred stock compensation...                   (444)                             (2,004)     (3,445)
  Accumulated deficit...........    (12,433)    (12,309)                            (25,730)    (25,568)
  Total liabilities and
    stockholders' equity
    (deficit)...................      9,869       9,493                              20,576      20,198
For the Year Ended:
  Sales and marketing
    expenses....................      5,169       5,194    $  1,834    $  1,839       6,082       6,186
  Research and development
    expenses....................      7,386       7,462       3,316       3,365       4,758       5,429
  General and administrative
    expenses....................      2,276       2,174         710         683       2,299       2,259
  Net loss......................    (20,855)    (20,731)     (8,789)     (8,760)    (13,297)    (13,259)
  Net loss attributable to
    common stockholders.........    (21,188)    (21,064)     (8,856)     (8,827)    (13,563)    (13,525)
  Basic and diluted net loss per
    common share................   $   1.29    $   1.26    $   0.54    $   0.53    $   0.83    $   0.81
  Weighted average shares used
    in computing basic and
    diluted net loss per common
    share.......................     16,386      16,671      16,385      16,670      16,389      16,675
  Pro forma basic and diluted
    net loss per common share
    (unaudited).................   $   1.05    $   1.03                            $   0.56    $   0.58
  Weighted average shares used
    in computing unaudited pro
    forma basic and diluted net
    loss per common share
    (unaudited).................     20,263      20,548                              24,188      23,504
</TABLE>

                                      F-26
<PAGE>
                                   [GRAPHIC]
1. At the top center of the page the phrase "Where the Elastic Solution Fits in
the Network" appears.

2. Below the phrase described above and on the top half of the page an
aerial-like image appears. On the right side of the page, appearing vertically,
is the word "CARRIER." In the top right corner a box-like image appears next to
which the word "HOME" appears. Out of the HOME box six lines emerge which merge
into one line which connects to a box-like image, below the HOME image, next to
which the word "CENTRAL OFFICE" appears. The Elastic logo appears next to the
CENTRAL OFFICE box, appearing to the lower right of the CENTRAL OFFICE box. A
line emerges from the CENTRAL OFFICE box which connects to a box-like image,
appearing in the top left corner, next to which the word "LARGE BUSINESS"
appears. A line emerges from the Elastic logo and connects to an Internet
"cloud" image, to the lower right of the CENTRAL OFFICE box, in which the word
"INTERNET" appears. Two additional lines emerge from the bottom left of the
CENTRAL OFFICE box which connect to, respectively, two box-like images, to the
lower left of the CENTRAL OFFICE box, next to which the words "SMALL BUSINESS"
appear.

3. Below the image described above and on the lower half of the page a second
aerial-like image appears. On the right side of the page, appearing vertically,
is the word "IN-BUILDING." In the top left a series of boxes connected by lines
appears next to which the words "COLLEGE CAMPUS" appears. On the lower right of
the COLLEGE CAMPUS box the Elastic logo appears. A line emerges from the Elastic
logo which connects to an Internet "cloud" image, to the lower right of the
COLLEGE CAMPUS boxes, in which the word "INTERNET" appears. In the top right
corner a box appears next to which the words "APARTMENT/CONDO" appear. On the
lower left of the APARTMENT/CONDO box the Elastic logo appears. A line emerges
from the Elastic logo which connects to the Internet "cloud" image, to the lower
left of the APARTMENT/CONDO box. A line emerges from the lower left of the
Internet "cloud" image and connects to an Elastic logo in lower left corner.
Three lines emerge from the Elastic logo and connect to a box-like image to the
left of the Elastic logo next to which the word "HOTEL" appears. Two lines
emerge from the lower right of the Internet "cloud" image and connect to two
Elastic logos in the lower right corner. Two lines emerge from the Elastic logo
appearing on the far right which connect to a box-like image next to which the
words "SMALL BUSINESS" appear. Two lines emerge from the second Elastic logo,
lying to the left of the SMALL BUSINESS box, which connect to a box-like image
next to which the words "LARGE BUSINESS" appear.
<PAGE>
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------

                                7,800,000 Shares

                                     [LOGO]

                                  Common Stock

                                 --------------

                                   PROSPECTUS
                               -----------------
CHASE H&Q                                                     ROBERTSON STEPHENS
                                UBS WARBURG LLC
                                  ------------

                               September 28, 2000

                               -----------------

    You should rely only on the information contained in this prospectus or to
which we have referred you. We have not authorized anyone to provide you with
information that is different. This document may only be used where it is legal
to sell these securities. The information in this document is only accurate as
of the date of this document.

    Until October 23, 2000 (25 days after the date of this prospectus), all
dealers that effect transactions in these shares of common stock, whether or not
participating in this offering, may be required to deliver a prospectus. This is
in addition to the dealers' obligation to deliver a prospectus when acting as an
underwriter and with respect to their unsold allotments or subscriptions.

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